Councilman bodies are seen in-
**Core Concept**
Councilman bodies are characteristic histopathological features seen in acute viral hepatitis. They are apoptotic hepatocytes with pyknotic nuclei, often surrounded by a clear halo. The presence of Councilman bodies indicates an intense inflammatory response and hepatocyte necrosis.
**Why the Correct Answer is Right**
The formation of Councilman bodies is a result of viral-induced apoptosis in hepatocytes. This process involves the activation of caspases, leading to DNA fragmentation, chromatin condensation, and eventual cell death. The presence of Councilman bodies is a hallmark of severe acute viral hepatitis, often associated with hepatitis B virus (HBV) or hepatitis C virus (HCV) infections. The inflammatory response triggers the release of cytokines, which in turn activate the apoptotic pathway, resulting in the characteristic histopathological changes.
**Why Each Wrong Option is Incorrect**
**Option A:** Councilman bodies are not typically seen in fatty liver disease, which is characterized by macrovesicular steatosis and lipid accumulation in hepatocytes.
**Option B:** While hepatitis B virus (HBV) and hepatitis C virus (HCV) infections can cause Councilman bodies, they are not exclusive to these viral infections. Other types of viral hepatitis, such as hepatitis A virus (HAV) and hepatitis E virus (HEV), can also lead to the formation of Councilman bodies.
**Option C:** Councilman bodies are not specific to autoimmune hepatitis, although autoimmune hepatitis can cause hepatocyte necrosis and inflammation.
**Clinical Pearl / High-Yield Fact**
Councilman bodies are a key histopathological feature in the diagnosis of acute viral hepatitis. They are often seen in conjunction with other histological changes, such as inflammation, necrosis, and bile duct damage. Recognizing Councilman bodies is essential for distinguishing acute viral hepatitis from other liver conditions.
**Correct Answer: C.**