Adenomyomatosis

Adenomyomatosis is a benign condition characterized by hyperplastic changes of unknown cause involving the wall of the gallbladder. Adenomyomatosis is caused by an overgrowth of the mucosa, thickening of the muscular wall, and formation of intramural diverticula or sinus tracts termed Rokitansky–Aschoff sinuses, also called entrapped epithelial crypts.

For the uterine condition, see Adenomyosis.
Adenomyomatosis
Micrograph showing Rokitansky–Aschoff sinus. H&E stain.
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