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Eduovisual

Perioperative & Surgical Care

Hepatic resection: indications and complications

Clinical Overview and When to Suspect Hepatic Resection

— Normal liver: FLR ≥20-25% of total liver volume

— Post-chemotherapy or steatotic liver: FLR ≥30%

— Cirrhotic liver: FLR ≥40%

Hepatocellular carcinoma (HCC) in well-compensated cirrhosis (Child-Pugh A, no portal hypertension, bilirubin normal)

Colorectal liver metastases (CRLM) — most common indication in the US; resection offers 5-yr survival 40-50%

— Intrahepatic cholangiocarcinoma, gallbladder cancer extension, hepatic adenoma >5 cm or symptomatic, neuroendocrine metastases, select benign lesions (giant hemangioma with symptoms), echinococcal cysts, hepatolithiasis, trauma

Step 3 management: Before referring for resection, obtain contrast-enhanced cross-sectional imaging (triple-phase CT or MRI), baseline LFTs, INR, platelets, AFP (HCC) or CEA (CRLM), and assess performance status. In cirrhotics, calculate MELD and Child-Pugh and screen for portal hypertension (platelets <100k, splenomegaly, varices, HVPG >10 mmHg are red flags).

Board pearl: A cirrhotic with HCC, portal hypertension, or bilirubin >1 mg/dL is better served by transplant or locoregional therapy (TACE, ablation), not resection.

Definition: Hepatic resection = surgical removal of liver parenchyma, ranging from non-anatomic wedge resections to anatomic segmentectomies, sectionectomies, hemihepatectomies, and extended (trisectionectomy) resections per Couinaud's 8-segment anatomy.
Core principle: The liver regenerates — up to 70-75% of functional parenchyma can be safely removed in a patient with normal underlying liver, but only ~40-50% in cirrhotics. The future liver remnant (FLR) must be adequate to prevent post-hepatectomy liver failure (PHLF).
Primary indications:
When to suspect a resection candidate on Step 3: A patient with a focal liver lesion on imaging + preserved hepatic function + no extrahepatic disease + technically resectable anatomy.
Solid White Background
Presentation Patterns and Key History

HCC: Often asymptomatic; surveillance-detected in cirrhotic patients. Late: RUQ pain, weight loss, decompensation (ascites, jaundice, variceal bleed), paraneoplastic hypoglycemia or erythrocytosis.

CRLM: Found on staging CT at colorectal cancer diagnosis (synchronous) or on surveillance CEA rise/CT (metachronous).

Hepatic adenoma: Young woman on OCPs; RUQ pain, occasionally rupture with hemoperitoneum and shock.

FNH: Asymptomatic, found incidentally — does not require resection unless diagnosis uncertain or symptomatic.

Hemangioma: Usually incidental; resect only if symptomatic and >5 cm.

Echinococcal cyst: Travel/sheep/dog exposure, eosinophilia, calcified cyst with daughter cysts.

Hepatitis B/C, alcohol use, NAFLD risk factors → cirrhosis assessment

OCP, anabolic steroids → adenoma

Prior colorectal cancer, breast, neuroendocrine → metastatic workup

Chemotherapy history — oxaliplatin causes sinusoidal obstruction (blue liver), irinotecan causes steatohepatitis (yellow liver); both raise PHLF risk

— Functional status, cardiopulmonary comorbidities (major hepatectomy is a high-risk operation)

— Smoking, weight loss, prior abdominal surgery (adhesions)

Key distinction: FNH vs hepatic adenoma — both occur in young women, but FNH has a central scar on MRI, is hormone-independent, has no malignant or bleeding risk, and is observed. Adenoma is hormone-driven, can bleed (especially >5 cm) and undergo malignant transformation (β-catenin mutated subtype), and warrants OCP cessation ± resection.

Board pearl: A new liver mass in a cirrhotic that is >1 cm with arterial enhancement and venous/delayed washout on multiphase imaging is diagnostic of HCC — no biopsy needed (LI-RADS 5). Biopsy risks needle-track seeding.

Most surgical liver lesions are detected incidentally on imaging done for another reason (abdominal pain workup, staging scans, trauma CT). Symptomatic presentation usually means advanced disease.
Common presentations:
Critical history elements:
Solid White Background
Physical Exam Findings and Hemodynamic Assessment

— Jaundice, scleral icterus → contraindication to major resection

— Spider angiomata, palmar erythema, gynecomastia, testicular atrophy

— Caput medusae, splenomegaly, ascites → portal hypertension, generally precludes resection

— Asterixis, fetor hepaticus → overt encephalopathy, absolute contraindication

— Muscle wasting, sarcopenia → independent predictor of post-op mortality

— Hepatomegaly, palpable mass, RUQ tenderness

Bruit over the liver suggests HCC vascularity or AV malformation

Friction rub with subcapsular tumor

— Shifting dullness, fluid wave → ascites

— Tense, distended abdomen with peritoneal signs in ruptured adenoma or HCC = surgical emergency

— Ruptured hepatic adenoma or HCC → hemorrhagic shock (hypotension, tachycardia, peritonitis). Resuscitate, transfuse, angiographic embolization first, then delayed resection when stable.

— Cirrhotics often run baseline low SVR, high cardiac output, low normal BP — masks early hemorrhage.

CCS pearl: A patient with a known liver mass who presents with sudden RUQ pain, hypotension, and a drop in hematocrit → order stat type & cross, 2 large-bore IVs, NS bolus, CT angiography of abdomen/pelvis, surgery and IR consults. Bleeding hepatic adenoma is the classic Step 3 vignette in a young woman on OCPs.

Board pearl: Bilirubin, ascites, and encephalopathy — even subtle findings — disqualify Child-Pugh B/C patients from major resection regardless of how technically resectable the tumor appears.

General exam: Most patients are well-appearing. Look for stigmata of chronic liver disease that change candidacy:
Abdominal exam:
Hemodynamic considerations:
Performance status assessment: ECOG 0-1 or KPS ≥70 for major hepatectomy. Frail patients benefit from prehabilitation.
Cardiopulmonary screen: Hepatectomy with low CVP anesthesia stresses cardiac reserve; obtain ECG, echo if indicated, and PFTs in smokers — ERAS protocols require optimization.
Solid White Background
Diagnostic Workup — Initial Labs and Imaging

CBC — thrombocytopenia <100k suggests portal hypertension and hypersplenism

CMP — bilirubin, AST/ALT, alk phos, albumin (synthetic function), creatinine

INR/PT — synthetic function; elevated INR is a Child-Pugh and MELD component

Hepatitis B surface Ag, anti-HBc, anti-HCV — etiology of underlying liver disease; HBV+ patients need antiviral suppression before and after resection

Tumor markers: AFP (HCC — >400 ng/mL is highly suggestive), CEA (CRLM, baseline and trend), CA 19-9 (cholangiocarcinoma), chromogranin A (NET)

— Type and screen, coagulation profile

Multiphase contrast-enhanced CT (arterial, portal venous, delayed) of abdomen/pelvis — characterizes the lesion and defines vascular anatomy (hepatic artery, portal vein, hepatic veins, IVC relationship)

MRI with hepatobiliary contrast (gadoxetate/Eovist) — superior for small lesions, CRLM characterization, and distinguishing FNH (retains contrast in delayed phase) from adenoma (does not retain)

Chest CT for metastatic staging in malignancy

Step 3 management: In a cirrhotic with a new hepatic nodule on screening US, obtain multiphase CT or MRI for LI-RADS classification:

— LR-5 (≥1 cm + arterial hyperenhancement + washout + capsule) = HCC, no biopsy

— LR-3/4 = follow-up imaging

— LR-M = probably non-HCC malignancy → biopsy

Board pearl: In CRLM, PET-CT is added when extrahepatic disease is suspected or to clarify equivocal lesions, but routine PET does not change management in clearly resectable disease per current NCCN guidance. Always image the chest before liver resection for any malignancy.

Initial laboratory panel:
Imaging — first-line:
Liver volumetry: CT volumetry calculates future liver remnant (FLR) as % of total liver volume minus tumor. Essential for major resection planning.
Solid White Background
Diagnostic Workup — Advanced and Confirmatory Studies

Child-Pugh score — bilirubin, albumin, INR, ascites, encephalopathy. Class A required for major resection.

MELD score — MELD ≥9-10 predicts increased post-op mortality; MELD >15 generally precludes resection.

Indocyanine green (ICG) retention test at 15 minutes — used in Asian centers; ICG-R15 <14% supports major hepatectomy

HVPG (hepatic venous pressure gradient) — gold standard; >10 mmHg = clinically significant portal hypertension, contraindicates resection. Surrogates: platelets <100k + splenomegaly, or varices on EGD.

HCC: biopsy NOT required if LI-RADS 5 imaging in a cirrhotic — risks seeding and bleeding

CRLM: Diagnosis usually inferred from known primary; biopsy if atypical or solitary lesion without known primary

Indeterminate mass: Core needle biopsy under image guidance

— ECG, echocardiogram if cardiac history or major resection planned

— PFTs in smokers or COPD

CPET (cardiopulmonary exercise testing) — VO2 max <12 mL/kg/min predicts high perioperative mortality

Key distinction: HCC requires confirmation of preserved liver function before resection (Child A, no portal HTN, normal bilirubin); CRLM resection is limited primarily by FLR adequacy and extrahepatic disease, since the underlying liver is usually healthy.

Board pearl: EGD for varices is part of pre-op workup in any cirrhotic. Significant varices = portal hypertension = no resection.

Assessment of underlying liver function and portal hypertension:
Tissue diagnosis:
Cardiopulmonary risk stratification:
Portal vein embolization (PVE): When FLR is inadequate, percutaneous embolization of the portal branch supplying the diseased lobe induces contralateral hypertrophy over 4-6 weeks. Re-image; if FLR now adequate, proceed to resection.
ALPPS (Associating Liver Partition and Portal vein ligation for Staged hepatectomy): Two-stage operation inducing rapid hypertrophy in 7-14 days; reserved for selected cases due to higher morbidity.
Solid White Background
Risk Stratification and First-Line Management Logic

Very early (0): Single <2 cm, Child A → resection or ablation

Early (A): Single <5 cm or up to 3 lesions <3 cm, Child A-B → resection (if no portal HTN, bilirubin normal), transplant (Milan criteria), or ablation

Intermediate (B): Multinodular, preserved function → TACE

Advanced (C): Vascular invasion or extrahepatic spread → systemic therapy (atezolizumab + bevacizumab first-line)

Terminal (D): Child C, poor performance → best supportive care

Resectable + healthy liver + no extrahepatic disease → resection ± perioperative chemotherapy (FOLFOX)

Borderline resectable: Conversion chemotherapy (FOLFOX/FOLFIRI ± biologic) → reassess

Synchronous CRLM: Sequence varies — liver-first, classic (colon-first), or simultaneous depending on symptoms and tumor biology

5-year survival after R0 resection: 40-50%

— Hepatic adenoma >5 cm, β-catenin mutated, or symptomatic → resect; <5 cm → stop OCP, observe with imaging

— FNH → no resection unless diagnostic uncertainty

— Symptomatic giant hemangioma → resect

Step 3 management: A cirrhotic with a 3 cm HCC, Child A, no portal hypertension, normal bilirubin, and adequate FLR is a resection candidate. The same patient with platelets 70k, splenomegaly, and small varices is a transplant candidate (within Milan: single ≤5 cm or up to 3 ≤3 cm).

Board pearl: Transplant trumps resection for HCC with any portal hypertension because it treats both the tumor and the underlying cirrhosis. MELD exception points are granted for HCC within Milan criteria.

CCS pearl: Document multidisciplinary tumor board review before scheduling hepatic resection for any malignancy — Step 3 favors this answer.

Decision tree by diagnosis:
HCC — BCLC staging drives management:
Colorectal liver metastases:
Other lesions:
Solid White Background
Pharmacotherapy — Perioperative Drug Regimen

HBV antiviral suppression: All HBV-positive patients undergoing resection or chemotherapy need entecavir or tenofovir to prevent reactivation, started before surgery and continued long-term

HCV: Direct-acting antivirals before or after resection per hepatology

Stop hepatotoxic and bleeding-risk agents: OCPs in adenoma; warfarin bridged per protocol; DOACs held 48 hours; aspirin often continued for cardiac indications; clopidogrel held 5-7 days

Beta-blocker continuation for cardiac patients; resume early post-op

Nutritional optimization: Albumin, prealbumin; immunonutrition (arginine, omega-3) for 5-7 days pre-op in malnourished patients

Low CVP anesthesia (CVP <5 mmHg) reduces hepatic venous backbleeding during parenchymal transection

Pringle maneuver — clamping of porta hepatis for inflow control, 15 min on / 5 min off

— Avoid hetastarch (renal/coagulopathy risk); use balanced crystalloid

Cefazolin within 60 min of incision; redose every 4 hours intra-op; add metronidazole if biliary anastomosis

Mechanical SCDs intra-op; chemical prophylaxis (LMWH or UFH) starting 24-48 hours post-op balancing bleeding risk. Cirrhotics are NOT auto-anticoagulated despite elevated INR — they have rebalanced hemostasis and remain at VTE risk.

Multimodal opioid-sparing: Acetaminophen (cap 2-3 g/day in liver patients), gabapentin, epidural or TAP block, low-dose opioids

Avoid NSAIDs — bleeding, AKI, and hepatic stress

Board pearl: HBV reactivation during or after hepatectomy/chemo can be fatal. Always check HBsAg and anti-HBc and start nucleos(t)ide analog prophylaxis before treatment in any positive patient.

Step 3 management: Acetaminophen is safe in cirrhotics at ≤2 g/day, but NSAIDs are contraindicated due to renal and bleeding risk.

Pre-operative:
Intra-operative pharmacology:
Antibiotic prophylaxis:
VTE prophylaxis:
Post-operative pain:
Solid White Background
Procedures — Operative Approaches and Techniques

Anatomic: Removes a Couinaud segment or section along vascular boundaries — preferred for HCC (microvascular invasion theory)

Non-anatomic (wedge): Margin-preserving — preferred for CRLM to maximize parenchymal sparing

Right hepatectomy: Segments 5-8 (~60% volume)

Left hepatectomy: Segments 2-4

Right trisectionectomy: Segments 4-8 (~75% volume) — high PHLF risk

Left lateral sectionectomy: Segments 2-3

— Segmentectomy, bisegmentectomy for limited disease

Open — large or complex resections, central lesions, vascular reconstruction

Laparoscopic — increasingly standard for left lateral and minor resections (Louisville/Southampton consensus)

Robotic — expanding role for posterior segments and major resections

Minimally invasive approaches show lower blood loss, shorter LOS, fewer complications in selected cases

Intraoperative ultrasound (IOUS) — mandatory; finds occult lesions, guides transection plane, defines vascular anatomy

Parenchymal transection: CUSA, harmonic scalpel, stapler

Inflow occlusion (Pringle) for hemorrhage control

Total vascular exclusion for IVC or hepatic vein involvement

PVE then resection 4-6 weeks later when FLR hypertrophies

ALPPS for rapid hypertrophy in 7-14 days

Liver-first approach in synchronous CRLM with asymptomatic primary

CCS pearl: Intra-operative orders that score well on CCS hepatectomy cases: type & cross 4 units PRBC, FFP available, central line, arterial line, foley, SCDs, prophylactic cefazolin, intra-op US, low CVP anesthesia communicated to anesthesia.

Board pearl: For HCC in a non-cirrhotic (e.g., fibrolamellar variant in young patients, HBV without cirrhosis), aggressive resection is appropriate as the liver tolerates major hepatectomy well — fibrolamellar HCC has the best prognosis of HCC subtypes.

Anatomic vs non-anatomic resection:
Named resections:
Margin: R0 (negative margin) is the goal. For CRLM, even 1 mm margin is acceptable with modern data; ≥1 cm preferred when feasible.
Approach:
Adjuncts:
Two-stage strategies:
Solid White Background
Special Populations — Elderly and Renal/Hepatic Impairment

— Age alone is not a contraindication — physiologic age matters more than chronologic

— Higher rates of cardiopulmonary complications, delirium, prolonged LOS

Comprehensive geriatric assessment: frailty (Fried criteria, gait speed), cognition (Mini-Cog), polypharmacy, functional status

Prehabilitation (4-6 weeks of exercise + nutrition + psychological support) improves outcomes

— Lower threshold for ICU recovery, delirium prevention bundles, early mobilization

— Consider minor resections, MIS approaches, and avoiding extended resections

Child-Pugh A, MELD <9, no portal hypertension, normal bilirubin = resection candidate

Child-Pugh B = high mortality; consider TACE, ablation, or transplant

Child-Pugh C = absolute contraindication

Portal hypertension (HVPG >10, platelets <100k + splenomegaly, varices) = contraindication to major resection; minor wedge resection of peripheral HCC may be considered selectively

— Adjust drug dosing; avoid sedatives that precipitate encephalopathy

— Pre-existing CKD increases post-op AKI risk

— Contrast-induced nephropathy: hydrate, minimize contrast load, gadolinium caution if eGFR <30 (NSF risk)

— Avoid nephrotoxins: NSAIDs, aminoglycosides

— Adjust LMWH (enoxaparin) dosing in CrCl <30

Step 3 management: A 78-year-old with a 4 cm CRLM, ECOG 1, normal LFTs, well-controlled HTN and DM is a resection candidate. Order prehabilitation, nutrition consult, cardiology clearance with stress echo if indicated, and proceed with minimally invasive approach if anatomically feasible.

Board pearl: Sarcopenia on CT psoas measurement independently predicts post-hepatectomy mortality — a modifiable target via nutrition and resistance training.

Elderly (≥70-75):
Cirrhosis / hepatic impairment:
Renal impairment:
Combined hepatorenal disease: Hepatorenal syndrome carries dismal surgical prognosis — not a resection candidate.
Solid White Background
Special Populations — Pregnancy, Pediatrics, and Other Subgroups

— Elective hepatic resection should be deferred until postpartum whenever possible

Ruptured hepatic adenoma in pregnancy is a surgical emergency — estrogen-driven enlargement increases rupture risk in 3rd trimester; angioembolization preferred if stable, resection if uncontrolled bleeding

— HCC in pregnancy: rare; multidisciplinary management with MFM and surgical oncology; second-trimester resection feasible

— Imaging: US first, MRI without gadolinium second; avoid CT/ionizing radiation

Hepatoblastoma — most common pediatric liver tumor (<3 yrs); elevated AFP; treated with neoadjuvant cisplatin-based chemo followed by resection or transplant per PRETEXT staging

Pediatric HCC — older children, often HBV-related

Mesenchymal hamartoma, hemangioendothelioma — benign lesions, resect if symptomatic

— Pediatric livers regenerate exceptionally well

— Healthy adult donates right or left lobe for transplant recipient

— Donor mortality 0.2-0.5%; ethics committee review mandatory

— Donor must have FLR ≥30-35%

— Endemic exposure history (Mediterranean, Middle East, South America)

Albendazole pre-op and post-op to reduce recurrence

— Surgery: pericystectomy or formal resection; avoid spillage (anaphylaxis, dissemination); inject scolicide (hypertonic saline) into cyst before opening

— Blunt liver injury managed nonoperatively in 80-90% if hemodynamically stable

— Indications for resection: ongoing hemorrhage, devitalized parenchyma, bile duct disruption — typically damage-control packing first, definitive resection later

Key distinction: Hepatoblastoma (AFP markedly elevated, young child) vs hepatocellular carcinoma (older child, HBV/cirrhosis-associated) — both pediatric primary liver malignancies but distinct biology, staging (PRETEXT), and chemo regimens.

Board pearl: OCP cessation in hepatic adenoma can shrink lesions <5 cm; counsel against future hormonal contraception and pregnancy until lesion stable.

Pregnancy:
Pediatrics:
Living donor hepatectomy:
Echinococcal (hydatid) cysts:
Trauma:
Solid White Background
Complications and Adverse Outcomes

— On post-op day 5: bilirubin >2.9 mg/dL AND INR >1.7

ISGLS grading: A (no change in management), B (deviation, no invasive treatment), C (invasive treatment, ICU)

— Risk factors: inadequate FLR, cirrhosis, steatosis, chemo-associated liver injury

— Treatment: supportive care, N-acetylcysteine, manage coagulopathy, dialysis, rescue transplant in selected cases

— Incidence 5-10%; ISGLS grade A-C

— Presents with bilious drain output, fever, RUQ pain

— Management: percutaneous drainage + ERCP with stent/sphincterotomy

— Intra-op blood loss is the strongest predictor of morbidity

— Post-op bleeding: hemodynamic instability, drop in Hgb → angiography ± embolization, return to OR if unstable

— Surgical site infection, intra-abdominal abscess, pneumonia, line sepsis, C. difficile

— Abscess: percutaneous drainage + culture-directed antibiotics

CCS pearl: POD 5 patient with rising bilirubin (4.2), INR 2.1, encephalopathy, oliguria → PHLF. Orders: ICU transfer, hepatology consult, NAC infusion, lactulose, broad-spectrum antibiotics, replace coagulation factors as needed for bleeding, evaluate for transplant.

Board pearl: Volume-outcome relationship is well-established for hepatectomy — refer to high-volume centers (>20 hepatectomies/year) to halve mortality.

Post-Hepatectomy Liver Failure (PHLF) — "50-50 criteria":
Bile leak / biloma:
Hemorrhage:
Infection:
Pleural effusion / ascites: Right-sided sympathetic effusions are common after right hepatectomy — usually resolve spontaneously; thoracentesis if symptomatic
Portal vein thrombosis, hepatic vein thrombosis: Doppler US for diagnosis; anticoagulation if extensive
Renal: AKI from hypoperfusion, contrast, hepatorenal physiology
Pulmonary: Atelectasis, pneumonia, PE
Cardiac: MI, atrial fibrillation
Wound: Infection, dehiscence, incisional hernia (late)
Mortality: Major hepatectomy 1-5% at high-volume centers; up to 10% in cirrhotics
Solid White Background
When to Escalate Care — ICU, Consult, and Triage Decisions

— Minor resection (<3 segments, MIS): step-down or floor with telemetry

— Major resection (≥3 segments, open): ICU x 24-48 hours at most centers, especially with cirrhosis or comorbidities

— Hemodynamic instability or vasopressor requirement

— Respiratory failure / need for mechanical ventilation

— Rising bilirubin + INR (PHLF concern)

— Encephalopathy, asterixis, altered mental status

— Oliguria, AKI requiring CRRT

— Coagulopathy with bleeding

— Sepsis from intra-abdominal source

Hepatology for PHLF, encephalopathy, ascites management

Interventional radiology for bile leak drainage, hemorrhage embolization, biloma drain

GI/ERCP for biliary stricture, bile leak stenting

Infectious disease for complex intra-abdominal infections, fungal, or resistant organisms

Transplant surgery for rescue liver transplant evaluation in PHLF

Nutrition for parenteral nutrition needs, refeeding syndrome risk

Palliative care for advanced disease or poor prognosis

— Tachypnea, hypoxia, hypotension, oliguria, altered mental status, new arrhythmia

— Increased drain output (especially bilious or bloody)

— Uncontrolled pain suggesting complication

Step 3 management: Post-op day 3 patient with fever 39°C, rising WBC, bilious drainage 400 mL/day from drain, RUQ pain → CT abdomen/pelvis with IV contrast, broad-spectrum antibiotics (piperacillin-tazobactam), IR drainage of biloma, ERCP with biliary stent to decompress and seal leak. Continue drain until output <50 mL/day.

CCS pearl: Always document goals of care and code status on admission and re-address before any escalation in a patient with metastatic or advanced disease.

Board pearl: ERAS (Enhanced Recovery After Surgery) protocols for hepatectomy reduce LOS and complications — early feeding, opioid-sparing, early mobilization, no routine NG tubes.

Routine post-op disposition:
ICU escalation triggers:
Consultative escalation:
Floor escalation triggers (rapid response):
Solid White Background
Key Differentials — Same-Category Liver Lesions

HCC — cirrhotic background, arterial enhancement + washout, AFP elevation

Intrahepatic cholangiocarcinoma — peripheral, delayed enhancement, CA 19-9 elevation, biliary dilation

Mixed HCC-CCA — features of both, poor prognosis

Metastases — most common malignant lesion overall; multiple, peripheral enhancement; colorectal #1, then breast, lung, melanoma, NET

Hepatic lymphoma, sarcoma, angiosarcoma — rare

Fibrolamellar HCC — young, non-cirrhotic, central scar, normal AFP — distinguishes from typical HCC

Hemangioma — most common benign lesion; T2 hyperintense, peripheral nodular enhancement with centripetal fill-in

FNH — central scar, hepatobiliary contrast retention, female, no malignant potential

Hepatic adenoma — OCP/steroid use, β-catenin subtype risk for malignancy, bleeding risk >5 cm

Simple cyst — anechoic, thin-walled, no septations

Polycystic liver disease — often with ADPKD

Biliary cystadenoma/cystadenocarcinoma — septations, mural nodules → resect

Echinococcal cyst — daughter cysts, calcifications, exposure history

Pyogenic or amoebic abscess — fever, leukocytosis, recent travel

Key distinction: FNH vs adenoma on MRI with hepatobiliary contrast — FNH retains contrast (functioning hepatocytes connected to bile ducts), adenoma does not. This single feature changes management from observation to resection.

Board pearl: A liver lesion in a non-cirrhotic adult is much more likely to be benign (hemangioma, FNH) than malignant — but in a cirrhotic, assume HCC until proven otherwise.

Step 3 management: For an indeterminate solid lesion, the next step is usually MRI with hepatobiliary contrast, not biopsy.

Focal liver lesion differential in a patient referred for possible resection:
Malignant:
Benign solid:
Cystic:
Solid White Background
Key Differentials — Non-Hepatic and Systemic Mimics

Hepatic abscess (pyogenic, amoebic, fungal) — fever, leukocytosis, exposure history; managed with percutaneous drainage + IV antibiotics (or metronidazole for amoebic), NOT resection

Inflammatory pseudotumor — mimics malignancy on imaging; biopsy clarifies

Focal fatty infiltration / focal fatty sparing — geographic, no mass effect, no enhancement — non-surgical

Hematoma — recent trauma or anticoagulation history

Sarcoidosis, TB granulomas — multiple small nodules, systemic features

Caroli disease — saccular intrahepatic bile duct dilation, recurrent cholangitis; may require resection if localized to one lobe

— Right adrenal mass (pheochromocytoma, adenoma) abutting liver

— Subdiaphragmatic abscess

— Duodenal or pancreatic mass invading liver

— Diaphragmatic hernia with herniated viscera

— Gallbladder mass extending into liver bed

Budd-Chiari syndrome — hepatic venous outflow obstruction; presents with ascites, hepatomegaly; not a resection target — needs anticoagulation, TIPS, or transplant

Portal vein thrombosis — alters operative approach; cavernous transformation may be a contraindication

Hemochromatosis, Wilson disease, autoimmune hepatitis — underlying cirrhosis changes resection candidacy

Key distinction: Pyogenic liver abscess vs necrotic tumor — both can appear as a complex cystic lesion. Abscess: fever, leukocytosis, positive blood cultures (often Klebsiella in Asian populations, associated with colon cancer in Western populations — colonoscopy required). Tumor: stable systemic findings, tumor markers, pattern over time.

Board pearl: A Klebsiella pneumoniae liver abscess in a Western patient mandates colonoscopy to rule out colorectal cancer — strong association.

Step 3 management: Don't operate on what you can drain. Suspected abscess → diagnostic aspiration, drain, culture, antibiotics — not resection.

Mimickers of resectable liver lesions:
Extrahepatic causes of "liver mass" appearance:
Systemic conditions affecting resection decisions:
Solid White Background
Secondary Prevention, Discharge Medications, and Long-Term Plan

Acetaminophen ≤2-3 g/day for pain; taper opioids quickly

DOAC or LMWH for VTE prophylaxis — continue 28 days post-op for malignancy resection per ASCO/ASH guidelines

HBV antiviral continuation (entecavir/tenofovir) — long-term in HBV+ patients

Statin continued or initiated per ASCVD indications — no liver-related contraindication

Resume home cardiac, antihypertensive, antidiabetic meds

— Discontinue OCPs in adenoma patients permanently

PPI only if indicated (no routine prophylaxis after first week)

— Stool softener while on opioids

CRLM: Adjuvant FOLFOX x 6 months post-resection if no neoadjuvant given; perioperative chemo (3 mo before + 3 mo after) is alternative

HCC: No proven adjuvant chemo; atezolizumab + bevacizumab under investigation for high-risk patients (IMbrave050)

Cholangiocarcinoma: Adjuvant capecitabine x 6 months (BILCAP trial)

HCC post-resection: Triphasic CT or MRI + AFP every 3-6 months for 2 years, then every 6-12 months. Recurrence rate 50-70% at 5 years.

CRLM post-resection: CEA every 3-6 months, CT chest/abd/pelvis every 6 months x 2 years, then annually; colonoscopy at 1 year

Cirrhosis surveillance continues: US + AFP every 6 months

— Abstain from alcohol (mandatory in cirrhotics, recommended in all)

— Hepatitis A/B vaccination if non-immune

— Weight management, treat NAFLD

— Smoking cessation

Step 3 management: Start adjuvant FOLFOX 4-8 weeks after CRLM resection once recovered. Delay >12 weeks loses survival benefit.

Board pearl: AFP that fails to normalize after HCC resection predicts residual disease — short-interval re-imaging required.

Discharge medication checklist:
Disease-specific adjuvant therapy:
Surveillance:
Lifestyle:
Solid White Background
Follow-Up, Monitoring, and Rehabilitation Counseling

Surgery clinic at 2 weeks — wound check, drain removal, pathology review, pain assessment

Surgery clinic at 6 weeks — full recovery assessment, return to activity, hernia surveillance

Oncology follow-up at 4-6 weeks for adjuvant therapy planning in malignancy

Hepatology at 4-6 weeks for cirrhotic patients — restage liver function

LFTs at 2 and 6 weeks — expect mild elevation that normalizes; persistent elevation suggests biliary stricture or recurrence

CBC, CMP, INR for synthetic function recovery

Tumor markers at baseline post-op (should normalize) and per surveillance schedule

Imaging at first surveillance visit (3 months) to establish new baseline

No lifting >10 lbs for 6 weeks (open); 2-4 weeks (laparoscopic)

— Walking encouraged from POD 1

— Driving when off opioids and able to brake forcefully (usually 2-3 weeks)

— Return to desk work 2-4 weeks; manual labor 6-8 weeks

— Sexual activity when comfortable

— Air travel typically safe at 2 weeks

— High-protein diet to support regeneration (1.2-1.5 g/kg/day)

— Adequate caloric intake; small frequent meals

— Avoid alcohol permanently in cirrhotics

— Multivitamin; replete fat-soluble vitamins (ADEK) in cholestatic patients

— Screen for post-operative depression and anxiety, especially in cancer patients

— Cancer survivorship resources, support groups

— Caregiver burden assessment

CCS pearl: A patient at 2-week follow-up with persistent right shoulder pain and low-grade fever after right hepatectomy → suspect subphrenic abscess or pleural effusion → order CT abdomen/chest, drain if confirmed.

Step 3 management: DEXA scan and bone health are not routine after hepatectomy, but cirrhotics have higher osteoporosis risk — screen if other risk factors present.

Board pearl: Failure to gain back weight or persistent fatigue at 6 weeks warrants workup for anastomotic stricture, recurrence, or depression — don't dismiss as "expected recovery."

Post-discharge follow-up cadence:
Monitoring parameters:
Activity and recovery counseling:
Nutrition:
Psychosocial:
Solid White Background
Ethical, Legal, and Patient Safety Considerations

— Disclose mortality (1-5% routine, up to 10% in cirrhosis), bile leak, hemorrhage, PHLF, infection, VTE, need for transfusion, possible conversion from MIS to open, possibility of unresectability discovered intra-op

— Discuss alternatives: ablation, TACE, transplant, systemic therapy, observation

— In oncology cases, discuss realistic outcomes — 5-year survival rates, recurrence risk

— Use teach-back to confirm understanding; document

— Resection in borderline candidates (Child B, marginal FLR, advanced age with frailty) requires careful shared decision-making

Multidisciplinary tumor board review is the standard — Step 3 strongly favors this answer

— Avoid futile surgery — document goals of care

— Independent donor advocate required

— Donor must be free to withdraw at any time

— Full disclosure of donor mortality (~0.2-0.5%) and morbidity

— Psychiatric evaluation to assess voluntariness, freedom from coercion

Hand-off from inpatient to outpatient is the highest-risk window — medication reconciliation errors, missed drain removals, lost pathology results

— Schedule follow-up before discharge, send discharge summary to PCP within 48 hours, ensure imaging and labs are ordered

— Confirm patient understanding of red-flag symptoms (fever, jaundice, bleeding, increasing drain output)

Universal Protocol (time-out) confirming patient, procedure, site, and laterality

— Surgical Care Improvement Project (SCIP) measures: timely antibiotics, normothermia, VTE prophylaxis, glucose control

— Specimen labeling — wrong-specimen errors can lead to wrong diagnosis

— Post-op handoff using structured tool (SBAR, I-PASS)

Step 3 management: A patient with metastatic CRLM and limited remaining options requests "everything possible." The right answer: explicitly explore goals of care, prognosis, and quality of life with palliative care consultation rather than offering high-risk resection without benefit.

Board pearl: Wrong-site liver surgery is rare but devastating — IOUS confirmation of lesion location before transection is now standard practice and a tested patient-safety concept.

Informed consent for hepatectomy:
Surgical decision-making in advanced disease:
Living donor hepatectomy ethics:
Transition-of-care risks:
Patient safety:
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High-Yield Associations and Rapid-Fire Clinical Facts

Board pearl: The single most common Step 3 question on hepatic resection tests resection vs transplant decision-making in HCC — memorize the BCLC algorithm and Milan criteria.

Key distinction: Cirrhotic with HCC → check portal hypertension and bilirubin to decide resection vs transplant.

HCC + cirrhosis + Child A + no portal HTN + bilirubin normalresection
HCC + Milan criteria + portal HTN or Child Btransplant
HCC + multinodular + preserved functionTACE
HCC + vascular invasion or extrahepatic spreadatezolizumab + bevacizumab
CRLM, resectable, no extrahepatic diseaseresection ± perioperative FOLFOX, 5-yr survival 40-50%
AFP >400 + arterial hyperenhancement + washout in cirrhoticHCC, no biopsy
Central scar on MRI, retains hepatobiliary contrastFNH — observe
Young woman, OCP, lesion does NOT retain hepatobiliary contrasthepatic adenoma — stop OCP, resect if >5 cm
β-catenin–mutated adenoma → highest malignant transformation risk → resect
Klebsiella pneumoniae liver abscess in Western patient → colonoscopy (CRC association)
Echinococcal cystalbendazole pre-op, careful surgery, avoid spillage
FLR cutoffs: normal 20%, post-chemo 30%, cirrhotic 40%
Future liver remnant too smallportal vein embolization to induce hypertrophy
50-50 criteria on POD5 (bili >2.9, INR >1.7) → post-hepatectomy liver failure
HBV+ undergoing resectionentecavir or tenofovir to prevent reactivation
Pringle maneuver = portal triad inflow occlusion, 15 min on / 5 min off
Cholangiocarcinoma adjuvantcapecitabine (BILCAP trial)
Fibrolamellar HCC → young, non-cirrhotic, central scar, normal AFP, best prognosis HCC variant
Hepatoblastoma → child <3 yrs, elevated AFP, treated by PRETEXT staging with cisplatin chemo + resection
VTE prophylaxis continued 28 days post-discharge after cancer hepatectomy
Volume matters — refer to high-volume centers (>20 cases/year)
Bile leakpercutaneous drainage + ERCP with stent
Right shoulder pain post-hepatectomy → think subphrenic abscess or referred pain from diaphragmatic irritation
Avoid NSAIDs in liver patients; acetaminophen ≤2 g/day is safe
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Board Question Stem Patterns

"55 yo M with HCV cirrhosis, Child A, platelets 180k, no varices on EGD, bilirubin 0.9, has a single 3 cm HCC in segment 6. AFP 250. Next step?"

Surgical resection (preserved function, no portal HTN, normal bilirubin)

→ Distractor: transplant (reserved for portal HTN or worse function), TACE (multinodular/intermediate), ablation (small <2 cm)

"62 yo with NASH cirrhosis, platelets 75k, splenomegaly, small esophageal varices, single 4 cm HCC."

Liver transplantation (within Milan criteria + portal HTN precludes resection)

"58 yo s/p sigmoid resection for stage III CRC, 18 months later CEA rises to 45, CT shows 2 liver lesions in right lobe, no extrahepatic disease. Next step?"

Multidisciplinary evaluation for hepatic resection ± perioperative chemotherapy

"26 yo F on OCPs for 8 years, RUQ pain, CT shows 6 cm hypervascular lesion not retaining hepatobiliary contrast on MRI. Next step?"

Stop OCPs, surgical resection (>5 cm, bleeding/malignancy risk)

"POD 5 after right hepatectomy, bilirubin 4.1, INR 2.0, encephalopathic, oliguric. Diagnosis?"

Post-hepatectomy liver failure (50-50 criteria); supportive care, transplant evaluation

"POD 4, fever, RUQ pain, drain output 500 mL bilious fluid, total bilirubin in drain >3x serum. Next step?"

Continue drainage + ERCP with biliary stent

"65 yo with K. pneumoniae liver abscess, no diabetes, US drained. Next step beyond antibiotics?"

Colonoscopy to rule out colorectal cancer

"Patient has resectable right lobe HCC but FLR calculated at 18% of total liver volume. Next step?"

Portal vein embolization to induce left lobe hypertrophy, then resect 4-6 weeks later

"HBsAg+ patient about to undergo hepatectomy for HCC. Which medication?"

Entecavir or tenofovir prophylactically

Board pearl: Step 3 stems often test the next best step rather than diagnosis — the question is rarely "what is it" and usually "what do you do now."

Step 3 management: When in doubt on a complex hepatic resection vignette, "refer to multidisciplinary hepatobiliary tumor board" is rarely wrong.

Stem 1 — HCC management decision:
Stem 2 — Cirrhotic with portal HTN:
Stem 3 — CRLM resection planning:
Stem 4 — Hepatic adenoma:
Stem 5 — Post-hepatectomy complication:
Stem 6 — Bile leak:
Stem 7 — Klebsiella abscess:
Stem 8 — Inadequate FLR:
Stem 9 — HBV reactivation prevention:
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One-Line Recap

Hepatic resection is the curative-intent option for selected primary and metastatic liver tumors in patients with preserved hepatic function, adequate future liver remnant, and no extrahepatic or vascular disease — its success hinges on choosing the right patient, optimizing the right lobe, and recognizing complications early.

Board pearl: The most common Step 3 hepatobiliary stem asks resection vs transplant in HCC — answer hinges on portal hypertension, bilirubin, and Child-Pugh class.

Patient selection trumps technique: Child A, no portal hypertension, normal bilirubin, FLR ≥20% (normal liver) / ≥30% (post-chemo) / ≥40% (cirrhotic). HCC with portal HTN → transplant, not resection.
Indications worth memorizing: HCC in compensated cirrhosis or non-cirrhotic livers, resectable colorectal liver metastases (5-yr survival 40-50% with R0 + adjuvant FOLFOX), intrahepatic cholangiocarcinoma (adjuvant capecitabine), large/symptomatic hepatic adenoma, hepatoblastoma after neoadjuvant chemo, and select benign or infectious lesions (echinococcus with albendazole coverage).
Complications to recognize cold: Post-hepatectomy liver failure (50-50 criteria — bilirubin >2.9 and INR >1.7 on POD5), bile leak (drain + ERCP stent), hemorrhage (angio-embolization), subphrenic abscess (percutaneous drainage), and HBV reactivation (preventable with entecavir or tenofovir prophylaxis).
Step 3 management mindset: Always run candidates through multidisciplinary tumor board, calculate FLR with CT volumetry, consider portal vein embolization when FLR is borderline, refer to high-volume centers (>20 cases/year), continue VTE prophylaxis 28 days post-discharge in cancer patients, surveil with imaging + tumor markers every 3-6 months for 2 years, and never forget that acetaminophen ≤2 g/day is safe but NSAIDs are not in the post-hepatectomy patient.
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