**Councilman Bodies in Liver Pathology**

**Core Concept**
Councilman bodies are apoptotic hepatocytes, which are characteristic of viral hepatitis, particularly hepatitis B. They represent a specific type of cell death that occurs due to viral replication and subsequent immune-mediated injury to the liver cells.

**Why the Correct Answer is Right**
Councilman bodies are a hallmark of viral hepatitis, specifically hepatitis B, where the virus triggers apoptosis in infected hepatocytes. This leads to the formation of characteristic apoptotic bodies, which are seen as eosinophilic, pyknotic nuclei surrounded by a clear halo. The presence of Councilman bodies is a diagnostic clue in liver biopsy specimens, indicating active viral replication and immune-mediated damage to the liver.

**Why Each Wrong Option is Incorrect**
**Option A:** This choice is incorrect as Councilman bodies are not typically seen in autoimmune hepatitis, where the immune system attacks the liver cells, but the cells do not undergo apoptosis in the same manner as in viral hepatitis.
**Option B:** This choice is incorrect as fatty change, seen in non-alcoholic fatty liver disease, is a different type of liver injury that does not involve apoptosis of hepatocytes.
**Option C:** This choice is incorrect as bile duct damage, seen in primary biliary cholangitis, is a different type of liver injury that does not involve apoptosis of hepatocytes.

**Clinical Pearl / High-Yield Fact**
Councilman bodies are a specific type of apoptotic body that is characteristic of viral hepatitis, particularly hepatitis B. They are a key diagnostic clue in liver biopsy specimens, indicating active viral replication and immune-mediated damage to the liver.

**Correct Answer: C.