Sonographical features: 1. Liver size enlarged Right lobe size > 150 mm in midclavicular line. Left lobe may extend well across midline into epigastrium.Inferior tip of right lobe seen well below the lower pole of right kidney. 2. Altered liver margins & contour Inferior margin of right lobe becomes rounded (normally sharp/pointed). Inferior margin of right lobe becomes rounded (normally sharp/pointed). 3. Parenchymal echotexture (depends on etiology): Homogeneous enlargement → e.g., early congestion, acute hepatitis. Coarse / heterogeneous echotexture → chronic liver disease, infiltration, cirrhosis. Increased echogenicity → fatty infiltration. Hypoechoic / heterogeneous → acute hepatitis, lymphoma, infiltration. 4. Vascular landmarks displaced Diaphragm pushed superiorly. Portal/hepatic veins appear elongated due to enlargement. Associated findings Splenomegaly (portal hypertension, storage disorders). Ascites (cirrhosis, right heart failure).Focal lesions (if cause is tumor, abscess, hydatid cyst).
Ultrasound report line (Findings):Liver is enlarged in size with rounded inferior margin. Parenchymal echotexture is homogeneous with normal echogenicity. No focal lesion is identified. Intrahepatic biliary radicles are not dilated. Portal vein and hepatic veins are patent with normal flow.
Conclusion: Hepatomegaly
Recommendation: Clinical correlation is required
Symptoms:
General / Constitutional
- Fatigue
- Malaise
- Weight loss (chronic conditions)
- Fever (if infectious cause)
- Right upper quadrant (RUQ) fullness or discomfort
- Sensation of abdominal distension / bloating
- Dull ache in upper abdomen (due to stretching of liver capsule)
- Pain in severe enlargement or with rapid stretching
- Jaundice – yellowing of skin/eyes (hepatitis, cirrhosis, obstruction)
- Nausea / vomiting / loss of appetite
- Pruritus (itching) – cholestatic disease
- Ascites (fluid in abdomen) – advanced CLD or cirrhosis
- Splenomegaly – in portal hypertension, hematologic disorders
- Peripheral edema – in cirrhosis or heart failure
- Spider angiomas, palmar erythema – chronic liver disease
- Confusion / altered mental status – hepatic encephalopathy (advanced cases)
Causes of Hepatomegaly:
1. Infective / Inflammatory
- Acute viral hepatitis (HAV, HBV, HCV, etc.)
- Chronic hepatitis
- Liver abscess (pyogenic, amoebic)
- Granulomatous infections (tuberculosis, schistosomiasis, candidiasis)
- Non-alcoholic fatty liver disease (NAFLD)
- Alcoholic fatty liver
- Glycogen storage disorders
- Hemochromatosis (iron overload)
- Wilson’s disease (copper accumulation)
- Amyloidosis
- Storage disorders (Gaucher’s, Niemann–Pick)
- Congestive heart failure
- Constrictive pericarditis
- Budd–Chiari syndrome (hepatic vein outflow obstruction)
- Veno-occlusive disease
- Portal hypertension with passive congestion
- Primary liver tumors (Hepatocellular carcinoma, Hemangioma, Adenoma)
- Metastatic deposits (commonest malignant cause)
- Lymphoma / Leukemia with hepatic infiltration
- Polycystic liver disease
- Cirrhosis (compensated stages with enlarged liver)
- Infiltrative diseases (sarcoidosis)
Diagnostic Strategy for Hepatomegaly:
Diagnostic Strategy for Hepatomegaly
1. History & Clinical Examination
- Onset, duration, associated symptoms (pain, fever, jaundice, weight loss)
- Risk factors: alcohol, viral hepatitis exposure, metabolic disease, heart disease, family history
- Examine for stigmata of chronic liver disease, splenomegaly, ascites, lymphadenopathy
- Liver function tests (LFTs): AST, ALT, ALP, bilirubin, albumin, INR
- Serology: Viral hepatitis markers (HBsAg, anti-HCV, etc.)
- Metabolic tests: Iron studies (hemochromatosis), ceruloplasmin (Wilson’s), α-1 antitrypsin, lipid profile
- Autoimmune markers: ANA, SMA, AMA if autoimmune hepatitis or cholestatic disorders suspected
- Ultrasound (first-line): Assess size, echotexture, focal lesions, vascularity, biliary system, associated findings (splenomegaly, ascites)
- Doppler: Evaluate portal vein, hepatic vein, IVC, hepatic artery flow
- CT/MRI: Characterization of lesions, vascular anomalies, diffuse disease, staging of neoplasm
- Elastography: Assess fibrosis / cirrhosis
- Liver biopsy: If diagnosis remains uncertain (unexplained hepatomegaly, suspected infiltration, storage disorders)
- Echocardiography: If cardiac cause suspected (right heart failure, constrictive pericarditis)
- Endoscopy: If portal hypertension suspected (esophageal varices)
- Integrate clinical, lab, and imaging features to classify hepatomegaly as:
- Acute: infections, congestion, acute hepatitis
- Chronic: fibrosis, cirrhosis, storage/metabolic diseases
- Focal: neoplastic, cystic, abscesses
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