Etiology, pathogenesis and clinical picture.

Benign tumors of the gallbladder are rare. Single and multiple papillomas, adenomas, lipomas, fibromas, myomas, adenofibromes and adenomyomas, leiomyomas, myxomes are described.. Usually, the tumors are small, located in the region of the bottom of the gallbladder and are asymptomatic. In vivo, benign tumors are detected accidentally in the form of parietal filling defects during an X-ray examination conducted for concomitant cholelithiasis or cholecystitis (diameter not less than 0.5 mm), and also during surgery. When these tumors are detected, cholecystectomy is shown, since it is difficult to exclude their malignancy.

Benign tumors of extrahepatic bile ducts are even less common than tumors of the gallbladder. Described papillomas, adenomas, cysts adenomas, fibromas, maksoms, lipomas and carcinoids (sometimes metastasizes). Tumors of the common bile duct and large duodenal nipple can cause obturation, until the development of mechanical jaundice. They are usually found with laparoscopy, choledochoscopy and operating cholangiography.

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