The authors relate five cases of primary @entity1494 that occurred between 1977 and 1983. Four @entity5 were located in the base and the lateral sides of the bladder, while the fifth was in the dome. Four @entity5 out of five were invading when diagnosis was done and were cured by a wide surgical cutting-away; the fifth which was a superficial one, was stopped by endoscopic resection. Bladder primary @entity420 represent less than two percent of the whole epithelial @entity5 of this organ. They can be found under two specific topographic aspects: the first one, located in the dome or in the anterior wall is considered as a @entity5 of urachus, the second one, usually located in the trigonal and peri-trigonal area is considered as a vesical @entity420 proper. The histogenesis of these lesions quite probably lies in a mechanism of vesical urothelium metaplasia under the influence of mechanical and infectious factors. Most of these @entity5 are isolated and invading when they are found out. One might distinguish @entity420 similar to those of the gut, from @entity189 where the metaplastic glandular features are predominant. Clinically, @entity5 hardly differ from the usual urothelial invading @entity189 except by a mucus secretion in the bladder that is, however quite unusual. Prognosis of such lesions is bad but a little better in urachus @entity189 cases. The treatment is surgical and involves a wide cutting-away, the extent of which can be discussed for @entity5 . The impact of radiotherapy and chemotherapy upon them has still to be proved.(ABSTRACT TRUNCATED AT 250 WORDS)

[Primary XXXX . Apropos of 5 cases].

@entity5 :: ('MESH:D009369', 'Disease') :: ['glandular tumours', 'tumours', 'urachus tumors', 'tumour'] @entity420 :: ('MESH:D000230', 'Disease') :: ['adenocarcinomas', 'adenocarcinoma'] @entity189 :: ('MESH:D002277', 'Disease') :: ['urothelial carcinomas', 'carcinoma'] @entity1494 :: ('MESH:D001745', 'Disease') :: ['adenocarcinoma of the bladder']
@entity1494 :: (MESH:D001745,Disease) :: ['adenocarcinoma of the bladder']
