Primary Leiomyosarcoma of the Gallbladder.

Leiomyosarcoma (LMS) of the gallbladder is an extremely rare entity. Most reported cases were mistakenly diagnosed preoperatively as cholecystitis with or without cholelithiasis. We believe that our article demonstrates the 5 case of gallbladder LMS that was suspected preoperatively to be malignant rather than cholecystitis, which fortunately led to radical resection of the tumor instead of simple cholecystectomy.