Hepatomegaly: Difference between revisions

(Expanded with EM-focused content: mechanism-based DDx, red flags, evaluation strategy, acute liver failure management, disposition)
(Strip excess bold)
 
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===By Mechanism===
===By Mechanism===
*'''Congestion''': right heart failure, Budd-Chiari syndrome, constrictive pericarditis, IVC obstruction
*Congestion: right heart failure, Budd-Chiari syndrome, constrictive pericarditis, IVC obstruction
*'''Inflammation''': viral hepatitis (A, B, C, EBV, CMV), alcoholic hepatitis, autoimmune hepatitis, drug-induced hepatotoxicity, hepatic abscess (pyogenic, amebic)
*Inflammation: viral hepatitis (A, B, C, EBV, CMV), alcoholic hepatitis, autoimmune hepatitis, drug-induced hepatotoxicity, hepatic abscess (pyogenic, amebic)
*'''Infiltration''': fatty liver (NAFLD/NASH), amyloidosis, sarcoidosis, glycogen storage diseases
*Infiltration: fatty liver (NAFLD/NASH), amyloidosis, sarcoidosis, glycogen storage diseases
*'''Malignancy''': hepatocellular carcinoma, metastatic disease (colon, breast, lung most common), lymphoma, leukemia
*'''Malignancy''': hepatocellular carcinoma, metastatic disease (colon, breast, lung most common), lymphoma, leukemia
*'''Biliary''': biliary obstruction, primary biliary cholangitis, primary sclerosing cholangitis
*Biliary: biliary obstruction, primary biliary cholangitis, primary sclerosing cholangitis


==Evaluation==
==Evaluation==
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===Laboratory===
===Laboratory===
*'''[[LFTs]]''': AST, ALT (hepatocellular injury), alkaline phosphatase, GGT (cholestatic), bilirubin
*'''[[LFTs]]''': AST, ALT (hepatocellular injury), alkaline phosphatase, GGT (cholestatic), bilirubin
*'''Coagulation studies (PT/INR)''': marker of synthetic function — elevated in acute liver failure
*Coagulation studies (PT/INR): marker of synthetic function — elevated in acute liver failure
*'''Albumin''': marker of synthetic function
*Albumin: marker of synthetic function
*[[CBC]]: thrombocytopenia (portal hypertension/hypersplenism), elevated WBC (infection, leukemia)
*[[CBC]]: thrombocytopenia (portal hypertension/hypersplenism), elevated WBC (infection, leukemia)
*[[BMP]]: renal function (hepatorenal syndrome), glucose
*[[BMP]]: renal function (hepatorenal syndrome), glucose
*'''[[Acetaminophen toxicity|Acetaminophen level]]''' and toxicology screen if acute liver injury suspected
*[[Acetaminophen toxicity|Acetaminophen level]] and toxicology screen if acute liver injury suspected
*[[Acute hepatitis]] serologies (HAV IgM, HBsAg, HBc IgM, HCV Ab) for acute hepatocellular pattern
*[[Acute hepatitis]] serologies (HAV IgM, HBsAg, HBc IgM, HCV Ab) for acute hepatocellular pattern
*[[Lactate]] if concern for sepsis or shock liver
*[[Lactate]] if concern for sepsis or shock liver
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===Imaging===
===Imaging===
*'''[[RUQ US]]''': first-line imaging — evaluates liver size, echotexture, masses, biliary dilation, ascites, hepatic vein patency
*[[RUQ US]]: first-line imaging — evaluates liver size, echotexture, masses, biliary dilation, ascites, hepatic vein patency
*'''[[POCUS]]''': rapid assessment for ascites, hepatic congestion, IVC dilation (right heart failure)
*[[POCUS]]: rapid assessment for ascites, hepatic congestion, IVC dilation (right heart failure)
*'''CT abdomen with contrast''': mass characterization, abscess identification, vascular evaluation
*CT abdomen with contrast: mass characterization, abscess identification, vascular evaluation
*Doppler ultrasound if Budd-Chiari suspected (hepatic vein thrombosis)
*Doppler ultrasound if Budd-Chiari suspected (hepatic vein thrombosis)


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==Management==
==Management==
*Treat underlying condition
*Treat underlying condition
*'''Acute liver failure''': ICU admission, hepatology/transplant consultation, [[N-acetylcysteine]] if acetaminophen toxicity suspected, correct coagulopathy only if actively bleeding or procedural need
*Acute liver failure: ICU admission, hepatology/transplant consultation, [[N-acetylcysteine]] if acetaminophen toxicity suspected, correct coagulopathy only if actively bleeding or procedural need
*'''Hepatic abscess''': IV antibiotics, IR-guided drainage, ID consultation
*Hepatic abscess: IV antibiotics, IR-guided drainage, ID consultation
*'''Budd-Chiari''': anticoagulation, IR consultation for TIPS, hepatology
*Budd-Chiari: anticoagulation, IR consultation for TIPS, hepatology
*'''Congestive hepatopathy''': treat underlying heart failure
*Congestive hepatopathy: treat underlying heart failure
*'''Hepatic decompensation''': manage ascites, encephalopathy (lactulose), GI bleeding as indicated
*Hepatic decompensation: manage ascites, encephalopathy (lactulose), GI bleeding as indicated
*Treat [[hepatic dysfunction]] if present
*Treat [[hepatic dysfunction]] if present


Latest revision as of 09:29, 22 March 2026

Background

Inferior view of the liver with surface showing lobes and impressions.
  • Hepatomegaly is an enlarged liver, palpable below the right costal margin or >12cm in the midclavicular line on imaging
  • In the ED, hepatomegaly is typically discovered incidentally on exam or imaging, or presents with RUQ pain/fullness
  • Key EM considerations: differentiate benign causes (fatty liver, hepatic congestion) from emergent conditions (Budd-Chiari syndrome, acute liver failure, hepatic abscess)
  • May indicate underlying serious disease: heart failure, malignancy, cirrhosis with decompensation

Clinical Features

Hepatomegaly palpable on exam in a pediatric patient.
Hepatomegaly on exam in an adult patient.

History

  • RUQ fullness, pain, or discomfort
  • Jaundice, dark urine, pale stools
  • Abdominal distension (ascites)
  • Weight loss, fatigue, malaise (malignancy, chronic liver disease)
  • Alcohol use, medication/supplement history (hepatotoxins)
  • Risk factors for hepatitis (travel, IV drug use, sexual history, blood transfusions)
  • Dyspnea, orthopnea, edema (right heart failure)
  • Prior cancer history (metastases)

Physical Exam

  • Palpable liver edge below right costal margin
  • Percussion span >12cm in midclavicular line (normal: 6-12cm)
  • Liver character: smooth (congestion, fatty liver) vs. nodular (cirrhosis, metastases) vs. tender (hepatitis, congestion, abscess)
  • Stigmata of chronic liver disease: spider angiomata, palmar erythema, gynecomastia, caput medusae, ascites
  • Splenomegaly (portal hypertension, hematologic malignancy)
  • JVD, peripheral edema (right heart failure, hepatic congestion)
  • Hepatojugular reflux (congestive hepatopathy)

Red Flags

  • Rapidly enlarging liver with pain (hepatic hemorrhage, Budd-Chiari, acute liver failure)
  • Hepatomegaly + jaundice + coagulopathy + encephalopathy (acute liver failure)
  • Hepatomegaly + fever + sepsis (hepatic abscess)
  • New-onset ascites
  • Hemodynamic instability

Differential Diagnosis

Hepatic Dysfunction

Infectious

Neoplastic

Metabolic

Biliary

  • Biliary cirrhosis

Drugs

Miscellaneous

By Mechanism

  • Congestion: right heart failure, Budd-Chiari syndrome, constrictive pericarditis, IVC obstruction
  • Inflammation: viral hepatitis (A, B, C, EBV, CMV), alcoholic hepatitis, autoimmune hepatitis, drug-induced hepatotoxicity, hepatic abscess (pyogenic, amebic)
  • Infiltration: fatty liver (NAFLD/NASH), amyloidosis, sarcoidosis, glycogen storage diseases
  • Malignancy: hepatocellular carcinoma, metastatic disease (colon, breast, lung most common), lymphoma, leukemia
  • Biliary: biliary obstruction, primary biliary cholangitis, primary sclerosing cholangitis

Evaluation

Evaluating liver size on ultrasound.
Hepatomegaly on CT.

Laboratory

  • LFTs: AST, ALT (hepatocellular injury), alkaline phosphatase, GGT (cholestatic), bilirubin
  • Coagulation studies (PT/INR): marker of synthetic function — elevated in acute liver failure
  • Albumin: marker of synthetic function
  • CBC: thrombocytopenia (portal hypertension/hypersplenism), elevated WBC (infection, leukemia)
  • BMP: renal function (hepatorenal syndrome), glucose
  • Acetaminophen level and toxicology screen if acute liver injury suspected
  • Acute hepatitis serologies (HAV IgM, HBsAg, HBc IgM, HCV Ab) for acute hepatocellular pattern
  • Lactate if concern for sepsis or shock liver
  • Consider: ammonia (encephalopathy), autoimmune markers (ANA, ASMA), ceruloplasmin (Wilson's)

Imaging

  • RUQ US: first-line imaging — evaluates liver size, echotexture, masses, biliary dilation, ascites, hepatic vein patency
  • POCUS: rapid assessment for ascites, hepatic congestion, IVC dilation (right heart failure)
  • CT abdomen with contrast: mass characterization, abscess identification, vascular evaluation
  • Doppler ultrasound if Budd-Chiari suspected (hepatic vein thrombosis)

CHF Workup

Management

  • Treat underlying condition
  • Acute liver failure: ICU admission, hepatology/transplant consultation, N-acetylcysteine if acetaminophen toxicity suspected, correct coagulopathy only if actively bleeding or procedural need
  • Hepatic abscess: IV antibiotics, IR-guided drainage, ID consultation
  • Budd-Chiari: anticoagulation, IR consultation for TIPS, hepatology
  • Congestive hepatopathy: treat underlying heart failure
  • Hepatic decompensation: manage ascites, encephalopathy (lactulose), GI bleeding as indicated
  • Treat hepatic dysfunction if present

Disposition

Admit

  • Acute liver failure
  • Hepatic abscess
  • New decompensated cirrhosis (ascites, encephalopathy, variceal bleed)
  • Budd-Chiari syndrome
  • Hemodynamic instability
  • Suspected hepatic malignancy requiring urgent workup

Discharge

  • Incidental finding with stable labs and no acute symptoms — outpatient GI/hepatology follow-up
  • Known chronic liver disease without acute decompensation
  • Return precautions: jaundice, confusion, abdominal swelling, bleeding, fever

See Also

External Links

References

  1. ↑ Tintanelli's
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