Classification of hepatobiliary pathologies
At the beginning of the diagnostic search, the physician evaluates the spectrum of possible pathologies, which are divided into two main groups:
- Chronic diffuse lesions: These have the greatest clinical significance in routine practice. They include chronic hepatitis and liver cirrhosis. This group also includes biliary tract pathology: cholangitis and cholecystitis (calculous and acalculous).
- Focal lesions: Their detection is critical for differential diagnosis. They may be of infectious or parasitic origin (echinococcosis, liver abscesses). Oncological processes—primary tumors (hepatocellular carcinoma) and metastatic involvement—deserve special attention.
Assessment of hepatomegaly by edge characteristics
True enlargement of the organ (hepatomegaly) requires careful palpation. The main causes include congestive heart failure, hepatitis, cirrhosis, and oncology. The characteristics of the palpable liver edge play a key role.
| Abnormal | Consistency and edge | Sensory function | Specific signs |
|---|---|---|---|
| Congestive heart failure | Edge is rounded | Painful (due to capsule distension) | Hepatojugular reflux: pressing on the liver causes swelling of the right jugular vein (a sign of systemic venous congestion) |
| Liver cirrhosis | Denser consistency, irregular edge and surface | As a rule, painless | None identified |
| Oncology (hepatocellular carcinoma) | Significant tissue induration | - | "Stony hard liver" sign |
Laboratory algorithm: jaundice and enzymes
Initial patient triage begins with bilirubin evaluation. Hemolytic jaundice is the easiest to identify, characterized by an isolated elevation of the unconjugated bilirubin fraction. The main clinical difficulty is distinguishing between parenchymal and obstructive jaundice, as both show elevated conjugated bilirubin.
Enzymes serve as the basis for differentiation:
- Cytolysis syndrome: Reflects direct damage to hepatocytes. Manifests as a predominant elevation of aminotransferases (ALT, AST).
- Cholestasis syndrome: Indicates biliary tract damage. The main marker is a predominant elevation of alkaline phosphatase (ALP).
- Mixed lesion: Simultaneous elevation of ALT, AST, ALP, and GGT is observed. A typical example is primary biliary cholangitis, which affects both hepatocytes and the biliary system.
Systemic (extrahepatic) manifestations
Chronic diseases (cirrhosis, active hepatitis) often mimic systemic connective tissue diseases. Liver disease may manifest solely with these symptoms, completely mimicking systemic lupus erythematosus (SLE), scleroderma, or rheumatoid arthritis. A thorough history and biopsy are necessary to verify primary involvement.
Main extrahepatic masks:
- Fever: In cirrhosis and hepatitis, it has a non-infectious genesis. Important: in cholecystitis, cholangitis, or abscess, the fever is infectious (hectic, with chills and drenching sweats).
- Sicca syndrome (Sjögren's syndrome): Includes lack of saliva (xerostomia), tear deficiency (keratoconjunctivitis sicca), and multiple dental caries.
- Vascular disorders: A classic manifestation is Raynaud's syndrome ("dead fingers").
- Articular syndrome: Patients are troubled by persistent arthralgia or arthritis.
CAP: Cytolysis — Aminotransferases (ALT, AST); Cholestasis — Alkaline Phosphatase (ALP).
Class and exam questions
How to distinguish fever in hepatitis from fever in liver abscess?
In active hepatitis and cirrhosis, fever has a non-infectious origin. In abscess, cholangitis, or cholecystitis, it is infectious in nature—becoming hectic, accompanied by pronounced chills and drenching sweats.
What does hepatojugular reflux involve?
This is a reflux sign where pressing on an enlarged, tender liver causes the right jugular vein to swell. It is a reliable sign of systemic venous congestion in heart failure.
Why are rheumatological diseases mistakenly diagnosed in chronic hepatitis?
Chronic liver diseases may present with isolated joint syndrome, Raynaud's syndrome, and Sjögren's syndrome, mimicking the clinical picture of rheumatoid arthritis, scleroderma, or systemic lupus erythematosus.
What else to study on this topic
- Clinical presentation and diagnosis of primary biliary cholangitis.
- Focal liver lesions: echinococcosis and abscesses.
- Algorithm for distinguishing between parenchymal and obstructive jaundice.
- Indications for liver biopsy.
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