[Fibrino-necrotic ulcers in endovesical chemoprophylaxis in superficial bladder carcinoma: our case histories].

Presentation of one study on the incidence of fibrino-necrotic ulcers in patients undergoing endovesical chemoprophylaxis with mitomycin C. A description is made of these lesions evaluating their likely relationship to infectious processes. The paper concludes stating the need of endoscopic monitoring and the absence of proven prognostic factors.