**Question:** All are indications of liver transplantation except:

A. Cirrhosis
B. Hepatocellular carcinoma
C. Autoimmune hepatitis
D. Congenital anomalies of the liver

**Core Concept:** Liver transplantation is an operation to replace the diseased liver with a healthy liver from a donor. The primary indications for liver transplantation include severe liver diseases that are not responsive to medical treatment.

**Why the Correct Answer is Right:** D. Congenital anomalies of the liver are not typically severe enough to require transplantation. Liver transplantation is reserved for conditions that result in end-stage liver disease and life-threatening complications. Some of the common indications include:

1. **Cirrhosis:** End-stage liver disease resulting from chronic liver damage, typically due to hepatitis B or C infections, alcohol abuse, or autoimmune diseases. The progression of cirrhosis leads to severe complications like portal hypertension, ascites, variceal bleeding, or hepatic encephalopathy.
2. **Hepatocellular carcinoma (HCC):** A malignant tumor originating from hepatocytes. HCC is a common indication for liver transplantation, especially when the tumor is localized or has not spread beyond the liver.
3. **Autoimmune hepatitis:** An autoimmune disorder in which the immune system attacks the liver cells, leading to inflammation and damage. Autoimmune hepatitis is a significant indication for liver transplantation, especially when the disease is progressive, causing end-stage liver disease.

**Why Each Wrong Option is Incorrect:**

A. **Cirrhosis:** As mentioned previously, cirrhosis is a common indication for liver transplantation due to its progression leading to severe complications.

B. **Hepatocellular carcinoma (HCC):** Although HCC is an indication for liver transplantation, it is not incorrect, as it can be a reason for transplantation. However, the correct answer should be "HCC is a common indication for liver transplantation, especially when the tumor is localized or has not spread beyond the liver."

C. **Autoimmune hepatitis:** Similar to cirrhosis, autoimmune hepatitis is a significant indication for liver transplantation, especially when the disease is progressive and causes end-stage liver disease.

D. **Congenital anomalies of the liver:** As mentioned earlier, these conditions are not typically severe enough to require transplantation. Liver transplantation is reserved for conditions that lead to end-stage liver disease and life-threatening complications.