[Adenosquamous cancer of the gallbladder]

The observation of a rare histological form of the gallbladder carcinoma is described. Adenosquamous carcinoma was characterized by the presence of squamous epithelial and glandular components: among the areas of squamous cell carcinoma atypical glands were found which contained also squamous epithelium structures with signs of cell atypiia. The total involvement of the gallbladder, massive necrosis of the tumour, its outgrowth into the liver and dissemination in the peritoneum were observed.