Ultrasonic detection of occult testicular neoplasms in patients with gynaecomastia.

Gynaecomastia occurs in up to 10% of patients with malignant testicular tumours. In most cases a testicular mass will be easily palpable but occasionally these tumours are occult. Ultrasound has been shown to be of value in the detection of occult neoplasms in patients presenting with nodal disease. Two patients with gynaecomastia and palpably normal testes are presented in whom testicular tumour was diagnosed by ultrasonic examination of the scrotum.