[Primary adenocarcinoma of the bladder. Apropos of 10 cases. Retrospective study]

We report ten clinicopathological cases of primary adenocarcinoma of the urinary bladder. Histologic features were often reminiscent of those seen in digestive tumors: Lieberkühnian adenocarcinoma (4 cases), mucinous adenocarcinoma (3 cases) and signet ring cell adenocarcinoma with linitis plastica (1 case). Prognosis was poor in these tumors that were all invasive and had spread beyond the muscular layer: four patients died and six were critically ill when they were lost to follow-up. We emphasize the role played by glandular metaplasia of the vesical urothelium in the histogenesis of these tumors.