Sonographic Features of Gallbladder Adenomyomatosis

Adenomyomatosis is a benign gallbladder wall thickening seen in ~9% of patients, characterized by Rokitansky-Aschoff sinuses (mucosal herniations) appearing as cystic spaces with comet-tail artifact on ultrasound.

• Benign gallbladder wall thickening, prevalence up to 9%, increases with age.
• Key imaging feature: Rokitansky-Aschoff sinuses appearing as cystic spaces with comet-tail artifact from cholesterol crystals.
• Usually asymptomatic; may cause right upper quadrant pain.

RadPigeon summaries are original and for information only. They are not clinical advice.