[The risk factors of bladder tumors stage "A". Description of a new parameter (author's transl)]

199 cases of carcinoma of the bladder stage A were reviewed with a follow-up from 5 to 15 years. Some "factors of risk" can be deducted from this study. The first is the depth of the invasion of the submucosa when it can be specified. If the superficial part only is invaded (these tumors are called A1) the understaging is less important and the survival rate is much better than when the chorion is totally invaded (called A2). The grade of the tumor is also significant, grade III having a more favorable prognosis than grade IV. The topography of the tumor influences the prognosis: the worse are the tumors of the bladder neck or of this trigone. The other factors of risk are: the rapidity of recurrences, the volume and the number of the tumors: when they are big and multiple, the prognosis is particularly bad, the type of differenciation: the cylindric tumors are worse than the urothelial or epidermoid.