Agenesis of gall bladder--a diagnostic dilemma.

A case of suspected chronic cholecystitis who underwent laparotomy, was found to have agenesis of gall bladder. Standard investigative modalities which are done for chronic cholecystitis might be fallacious and baffling. Agenesis of gall bladder should be kept in mind whenever the gall bladder is improperly visualised in routine imaging methods.