[Differential sonographic diagnosis of scrotal diseases]

High-resolution scrotal sonography proves valuable in addition to clinical investigation. On the basis of a retrospective analysis of 282 sonographic examinations this method's contributions to the differential diagnosis of diseases of the scrotum are shown. It is usually possible to distinguish testicular from extratesticular tumours; certain signs of inflammation allow the distinction between orchitis and tumour. Sonography is very important for the study of acute painful lesions of the scrotum, which are not palpable, such as rupture following a trauma, severe inflammation and even tumours.