Question

Chronic Active Hepatitis is most reliably distinguished from Chronic Persistent Hepatitis by the presence of

• A. Extrahepatic manifestation
• B. Significant titre of antismooth muscle antibody
• C. Characteristic liver histology
• D. Hepatitis B surface antigen

Hint:

Think about what the two conditions actually look like under the microscope.

Answer 1

The Correct Option is C

This question is about the most dependable way to separate two older categories of chronic hepatitis.

1. Extrahepatic manifestation: These can occur in various chronic liver diseases and are not specific or consistent enough to reliably separate the two forms.
2. Significant titre of antismooth muscle antibody: This marker is more linked to autoimmune hepatitis specifically, not a general distinguishing feature between active and persistent hepatitis of any cause.
3. Characteristic liver histology: Chronic active hepatitis shows piecemeal necrosis extending into the liver lobule with a tendency to progress to cirrhosis, while chronic persistent hepatitis shows milder, portal-confined inflammation with a benign course. This histological difference is the most reliable distinguishing feature.
4. Hepatitis B surface antigen: This only reflects ongoing viral infection and can appear in either pattern of chronic hepatitis, so it does not distinguish between them.

Only the underlying liver histology reliably separates these two forms of chronic hepatitis.

Let's summarize:

• Chronic active hepatitis shows destructive, lobule-extending inflammation, while chronic persistent hepatitis stays confined to the portal tracts.
• This histological pattern, not antibodies or viral markers, is what reliably tells them apart.

So the distinguishing feature is characteristic liver histology.