A 35-year-old woman with adenomyomatosis of the gallbladder
Commentary
Adenomyomatosis of the gall bladder is a non-neoplastic condition in which there is hyperplasia of the mucous membrane and extension of the glandular structures into the muscularis of the gall bladder wall, associated with muscle hypertrophy. The protrusions of the mucosa are like small diverticula, and are known as Rokitansky–Aschoff sinuses. The condition probably arises on a basis of increased pressure in the gall bladder lumen, possibly due to a neurogenic dysfunction either in the neck of the gall bladder or in the common bile duct.
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