[Urine cytology studies in bladder tumors]

The stained urine smears of 151 patients were cytologically examined. The correspondence between histological and cytological diagnosis of the urine was 72.3% in 101 tumours of the urinary bladder. 5 of 11 patients with histologically benign papillomas of the urinary bladder showed malignant cells in the sediment. After four weeks 3 of them could histologically be ascertained as papillary carcinomas. Cytological investigations of the urine are suited for the early recognition of tumours of the urinary bladder, but also for the period between operation and radiotherapy as well as in the dispensary care.