[Staging of metastasized bladder cancer using parietocystotomography]

To date no diagnostic procedure has been able accurately to stage carcinomas of the urinary bladder. Parietocystotomography by means of instillation of air and nitrous oxide was used in an attempt to distinguish between the tumour infiltration stages T3A , T3B and T4 and to depict them radiologically. Using this method it is possible to achieve a high degree of concurrence between radiological findings and the pathological-anatomical substrate. The methods, results achieved and the limits of the procedure are demonstrated.