[Gallbladder adenoma with focal adenocarcinoma: a case report].

Gallbladder polyps represent a frequent and asymptomatic finding on abdominal sonography. We describe the ultrasound features of an asymptomatic 13-mm gallbladder polyp in a 29-year-old male. Video-laparoscopic cholecystectomy was performed, and histological examination of the lesion revealed a severely dysplastic tubular adenoma and chronic cholecystitis. To our knowledge, this is the first report of a gallbladder polyp already presenting severe dysplasia in a young Caucasian male without risk factors.