Section: Hepatobiliary Sub-section: Biliary Curriculum: Curriculum, page 89
- Adenomyomatosis of the gallbladder is a hyperplastic cholecystosis of the gallbladder wall.
- Characterized by overgrowth of the mucosa, thickening of the muscle wall, and intramural diverticula.
- It is a relatively common and benign cause of diffuse or focal gallbladder wall thickening, most easily seen on ultrasound and MRI.
- Hyperplasia of the wall with the formation of Rokitansky-Aschoff sinuses (intramural diverticula lined by mucosal epithelium) penetrating into the muscular wall of the gallbladder, with or without gallbladder wall thickening.
Management
- Patient symptomatic with right upper quadrant pain (often due to gallstones)
- Appearances (especially when focal) may be difficult to distinguish from malignancy
- Simple adenomyomatosis is not a premalignant condition.
- In absence of symptoms, no treatment.