Figure 3: Right spermatocele and bilateral TERT in a 64-year-old man, referred for scrotal enlargement. Imaging findings were typical for the diagnosis of TERT in this case. Sonographic follow-up revealed no change in the lesions. Transverse ( a ) T2-weighted and ( b ) post-contrast T1-weighted images show multilocular cystic mass (arrow) of the right paratesticular space, findings suggestive of the presence of a spermatocele. A small hydrocele is seen bilaterally. Both testes appear normal, except for the presence of TERT bilaterally (long arrow), detected as multilocular cystic spaces in the mediastinum testis, hyperintense on T2-weighted images and not enhancing after gadolinium administration. ( c ) Transverse ADC map (b = 900 s mm−2). Cystic ectasia of the rete testis appeared hyperintense on the ADC maps (arrowheads). The ADC values of the normal testicular parenchyma were 1.30 × 10−3 mm2 s−1 (right testis) and 1.32 × 10−3 mm2 s−1 (left testis). ADC: apparent diffusion coefficient; TERT: tubular ectasia of the rete testis.