**Question:** Maximum increase in α-fetoprotein increased is seen with -

A. Hepatocellular carcinoma
B. Neonatal jaundice
C. Pregnancy
D. Chronic hepatitis

**Core Concept:** α-fetoprotein (AFP) is a glycoprotein produced primarily by the yolk sac, fetal liver, and trophoblastic cells. It is used as a biomarker for certain liver conditions, particularly in infants and pregnant women.

**Why the Correct Answer is Right:** AFP levels are elevated in various conditions, including hepatocellular carcinoma (liver cancer), especially when it is in its early stages. In this context, the correct answer (A) is right because hepatocellular carcinoma is a primary liver tumor that can significantly increase AFP levels in the bloodstream.

**Why Each Wrong Option is Incorrect:**

A. Neonatal jaundice: This is a common condition in newborn infants characterized by increased bilirubin levels. While neonatal jaundice can cause a transient increase in AFP, the magnitude of the increase is typically lower compared to hepatocellular carcinoma.

B. Chronic hepatitis: Inflammatory liver diseases like chronic hepatitis can lead to elevated AFP levels; however, the increase is usually less significant than in hepatocellular carcinoma.

C. Pregnancy: AFP levels in pregnant women remain normal or slightly elevated throughout pregnancy due to placental production. The increase in AFP levels is not as pronounced as the rise seen in hepatocellular carcinoma.

**Clinical Pearl:** AFP levels can be elevated in various conditions; however, the maximum increase is seen in hepatocellular carcinoma, especially when it is in its early stages. A rising AFP level should prompt further investigation for liver cancer, especially in patients with risk factors such as chronic liver disease or a family history of liver cancer.