[Results of diagnostic exposure of the testes]

90 diagnostic exposures of the testis for confirming the clinical diagnosis of a malignant testicular tumor were examined. Wherease in 45 cases the diagnosis was confirmed, in the other 45 cases various diagnoses were established. Macroscopic examination only lead to a high incidence of false diagnoses (15%) followed by unnecessary orchiectomies. Thus, whenever possible a histological confirmation of the macroscopic findings should be made by frozen section before performing orchiectomy.