**Question:** Regarding Gilbert syndrome, true all except -

A. Increased susceptibility to liver diseases
B. Hepatomegaly
C. Abnormal liver function tests
D. Inheritance pattern

**Core Concept:**
Gilbert syndrome is a common, asymptomatic, and benign condition characterized by mild, intermittent elevation of serum bilirubin levels, primarily due to reduced conjugation of bilirubin by the enzyme UDP-glucuronosyl-transferase 1A1 (UGT1A1) in the liver.

**Why the Correct Answer is Right:**
Gilbert syndrome is a hereditary disorder, which means it follows an autosomal dominant pattern of inheritance. Therefore, the correct answer "Increased susceptibility to liver diseases" is incorrect as it is not a defining feature of the condition.

**Why Each Wrong Option is Incorrect:**
A. **Increased susceptibility to liver diseases:** This statement is incorrect because Gilbert syndrome is a benign condition that does not lead to liver disease or damage.

B. **Hepatomegaly:** Hepatomegaly refers to enlargement of the liver. In Gilbert syndrome, liver enlargement is not a usual feature, making this option incorrect.

C. **Abnormal liver function tests:** Mild elevation of serum bilirubin levels is a defining feature of Gilbert syndrome, indicating abnormal liver function tests. However, since the elevation is typically mild and intermittent, it is not considered abnormal in the context of this question.

D. **Hereditary pattern:** As mentioned earlier, Gilbert syndrome is an autosomal dominant disorder, making this option incorrect.

**Clinical Pearl:**
Understanding the inheritance pattern of Gilbert syndrome is essential for clinicians to differentiate it from more severe liver disorders. While mild elevation of serum bilirubin levels may lead to confusion with other liver diseases, the autosomal dominant inheritance pattern helps to identify the syndrome.

**Correct Answer:**
The correct answer is "Hepatomegaly" (option B). While this option is incorrect, it is included to demonstrate the importance of distinguishing between mild liver dysfunction and hepatomegaly in the context of Gilbert syndrome. Remember that Gilbert syndrome is characterized by intermittent, mild elevation of serum bilirubin levels due to reduced conjugation, not hepatomegaly.