[Formolization of the bladder mucosa for hemostatic purposes]

The authors have used formalin solutions for the control of haematuria induced by bladder tumours. The 10 percent solution was efficient but induced severe side effects, such as peritonitis due to vesical necrosis, urethral fistulae, etc. The 1 percent solution is also efficient, and the local aggressivity is practically lacking, provided only 1--3 applications are carried out. The method should be used only in cases of haematuria that cannot be stopped by classical conservative means and in which surgery is not indicated, either temporarily or definitively.