Forms the right boundary for the caudate lobe.

Forms the right boundary for the caudate lobe.

• A. Porta hepatis
• B. Falciform ligament
• C. Right coronary ligament
• D. GB fossa

Answer: (D)

The caudate lobe sits on the posterior aspect of the liver and has its borders defined by nearby vascular and peritoneal structures. Its right margin is formed by the groove for the inferior vena cava, which keeps the caudate lobe in contact with the IVC and separate from the right lobe. The gallbladder fossa, by contrast, is a depression on the visceral surface of the right lobe where the gallbladder sits; it does not form the boundary of the caudate lobe. Other borders include the porta hepatis (anterior boundary) and the fissure for the ligamentum venosum (left boundary). So, the right boundary of the caudate lobe is tied to the IVC groove, not the gallbladder fossa.

The caudate lobe sits on the posterior aspect of the liver and has its borders defined by nearby vascular and peritoneal structures. Its right margin is formed by the groove for the inferior vena cava, which keeps the caudate lobe in contact with the IVC and separate from the right lobe. The gallbladder fossa, by contrast, is a depression on the visceral surface of the right lobe where the gallbladder sits; it does not form the boundary of the caudate lobe. Other borders include the porta hepatis (anterior boundary) and the fissure for the ligamentum venosum (left boundary). So, the right boundary of the caudate lobe is tied to the IVC groove, not the gallbladder fossa.