[Synchronic bilateral testicular seminomas. Ultrasound diagnosis]

To report a new case of bilateral synchronic testicular tumors, and to perform a bibliographic review on the topic, emphasizing the ultrasound characteristics and oddity of these presentation, which accounts for less than 1% of germ cell testicular tumors.

29-year-old patient consulting because of an increase of the testicular size over one year. Physical examination and ultrasound revealed a synchronic neoplastic involvement of the testicles, suggesting the radiological diagnosis of bilateral "seminomatous tumor", with "non seminomatous" foci in one of them. Histologically, tumors were in accordance with ultrasound working diagnosis (seminomas, showing one of them anaplastic foci).

Synchronic testicular involvement by neoplasias is an unfrequent fact, scarcely reported in the literature, being most cases germ cell tumors, mainly seminomas, and shows a good correlation between ultrasound and histologic diagnosis.