Double cancer of the gallbladder--a case report.

The study presented the coexistence of papillary adenocarcinoma and microcellular neuroendocrine carcinoma of the gallbladder in a 56-year old female patient without cholelithiasis and developmental anomalies of the biliary-pancreatic ducts. Considering the material obtained by the authors (94 cases), the above-mentioned was diagnosed in 1,06% of gallbladder carcinomas. The authors analyzed literature data and considered pathogenetic factors, responsible for development of two gallbladder carcinomas.