[Urothelial carcinoma of the bladder following cyclophosphamide therapy]

A report is given on a 73-year-old patient in whom a urothelial carcinoma of the urinary bladder developed 11 years after a cyclophosphamide therapy. Taking the international literature into account, possible developmental mechanisms are discussed. Patients who have undergone cyclophosphamide therapy should be subject to constant urological observation as a high-risk group.