Findings: Two small complete testes are seen in the right hemiscrotum. A well-defined focal lesion with lobular outlines, measuring approximately 8 x 12 mm is seen in the right inferior testis. This lesion is mildly hyperintense on T1 and iso- hypointense on T2-weighted images to the surrounding testicular parenchyma. No diffusion restriction or internal enhancement is seen in this lesion; however, the adjacent testicular parenchyma shows mildly increased enhancement. No focal abnormality is appreciable in the right superior testis. Both right-sided testes have a separate epididymis and a vas deferens. The normal-looking solitary left testis. Minimal bilateral hydroceles.
Impression: Right-sided A1 triorchidism. A small well-defined non-enhancing lesion in right inferior testis, which is likely a sequel of previous ischemic/traumatic insult; the possibility of a mass lesion/tumor is unlikely.