<prompt> This incidental finding on ultrasound abdomen is suggestive of:Gall bladder stoneGall bladder polypAdenomyomatosisXanthgranulomatous cholecystitis  <response>: Adenomyomatosis: Image shows: Diamond ring sign comet tail aefact V - shaped aefact Hyperplasia in muscularis hyperproliferation of mucosa in gall bladder. Rokitansky-Aschoff sinuses are deep and there is deposition of Cholesterol crystal, when ultrasound is performed it looks like a ring. Rx: Symptomatic gall stone present - Lap. Cholecystectomy 