Which gallbladder anomaly is described as Bilobar (septated) with potential for stone formation?

Which gallbladder anomaly is described as Bilobar (septated) with potential for stone formation?

• A. Bilobar (septated)
• B. Hourglass
• C. Phrygian cap
• D. Duplication

Answer: (A)

A bilobar septated gallbladder describes a true division of the gallbladder into two lobes by a septum, with the two lobes usually communicating. This altered anatomy can create pockets of relative bile stasis in each chamber, which promotes stone formation. This pattern is distinct from an hourglass gallbladder, which has a single lumen narrowed at the midportion (not two separate lobes); a Phrygian cap is simply a fold of the fundus with no internal division; and duplication means two separate gallbladders. So the description of a bilobar (septated) gallbladder most directly aligns with the condition that predisposes to stones due to compartmentalized bile flow.

A bilobar septated gallbladder describes a true division of the gallbladder into two lobes by a septum, with the two lobes usually communicating. This altered anatomy can create pockets of relative bile stasis in each chamber, which promotes stone formation. This pattern is distinct from an hourglass gallbladder, which has a single lumen narrowed at the midportion (not two separate lobes); a Phrygian cap is simply a fold of the fundus with no internal division; and duplication means two separate gallbladders. So the description of a bilobar (septated) gallbladder most directly aligns with the condition that predisposes to stones due to compartmentalized bile flow.