Which is the second most common gallbladder anomaly?

Which is the second most common gallbladder anomaly?

• A. Phrygian cap
• B. Junctional fold
• C. Hartmann pouch
• D. Floating gallbladder

Answer: (B)

Variations in gallbladder anatomy are common and important to recognize so normal variants aren’t mistaken for disease. The second most frequent gallbladder anomaly is a junctional fold, a mucosal fold located at the junction between the body and the infundibulum. This fold creates an internal separation that can resemble a small septum or diverticulum on imaging, so identifying it as a benign fold helps prevent misinterpretation as pathology such as a cystic structure or obstruction. The Phrygian cap is the most common shape, a fundal fold giving a cap-like appearance; Hartmann’s pouch is another common infundibular pouching that can harbor sludge or stones, and a floating gallbladder is a much rarer condition where the gallbladder is unusually mobile due to lax attachments.

Variations in gallbladder anatomy are common and important to recognize so normal variants aren’t mistaken for disease. The second most frequent gallbladder anomaly is a junctional fold, a mucosal fold located at the junction between the body and the infundibulum. This fold creates an internal separation that can resemble a small septum or diverticulum on imaging, so identifying it as a benign fold helps prevent misinterpretation as pathology such as a cystic structure or obstruction. The Phrygian cap is the most common shape, a fundal fold giving a cap-like appearance; Hartmann’s pouch is another common infundibular pouching that can harbor sludge or stones, and a floating gallbladder is a much rarer condition where the gallbladder is unusually mobile due to lax attachments.