Which pathology involves pockets within the gallbladder wall that can harbor cholesterol crystals, forming diverticula?

Which pathology involves pockets within the gallbladder wall that can harbor cholesterol crystals, forming diverticula?

• A. Rokitansky-Aschoff Sinuses
• B. Adenomyomatosis
• C. Biloma
• D. Pneumobilia

Answer: (A)

Rokitansky-Aschoff sinuses are mucosal outpouchings that extend into the gallbladder wall, creating intramural diverticula. These wall pockets can trap cholesterol crystals, forming distinct diverticula within the wall—a hallmark of adenomyomatosis. On ultrasound, you may see a thickened gallbladder wall with small intramural cystic spaces corresponding to the sinuses, sometimes accompanied by comet-tail artifacts from the cholesterol crystals. This separates them from findings like biloma (a bile collection outside the wall) or pneumobilia (air within the biliary tree), and it fits the pattern of wall invaginations characteristic of this condition.

Rokitansky-Aschoff sinuses are mucosal outpouchings that extend into the gallbladder wall, creating intramural diverticula. These wall pockets can trap cholesterol crystals, forming distinct diverticula within the wall—a hallmark of adenomyomatosis. On ultrasound, you may see a thickened gallbladder wall with small intramural cystic spaces corresponding to the sinuses, sometimes accompanied by comet-tail artifacts from the cholesterol crystals. This separates them from findings like biloma (a bile collection outside the wall) or pneumobilia (air within the biliary tree), and it fits the pattern of wall invaginations characteristic of this condition.