[Primary adenocarcinoma of the bladder as single tumor. Study of 7 cases and review of the literature].

Primary vesical adenocarcinoma is an extremely uncommon tumour, representing 0.5 to 2% of all the urothelial vesical neoplasias. Its behaviour is aggressive and its prognosis poor, especially in the seal ring cell variety. We present our experience in seven cases of vesical adenocarcinoma: one of urachal origin, two of the seal ring cell type, and four of the urothelial type with no other specificity. All were advanced stage tumours at diagnosis. There is no unified therapeutic strategy, and poor results were obtained with the various treatments used. Survival eight months after diagnosis was 42.8%. Longest survival is 15 months, corresponding to the adenocarcinoma of urachal origin.