Isolated relapse of a lymphoblastic leukemia T cell precursor in the epididymis

A 41-year-old man who had otherwise asymptomatic right scrotal swelling presented to our urology clinic. He had been diagnosed with T cell precursor lymphoblastic leukemia/lymphoma 2 years previously. On examination, his right epididymis was enlarged. A regular, homogeneous, slightly hypoechoic solid mass was observed at the right caput epididymis. This testicular mass measured approximately 7×11×12 mm. Leukemia and lymphoma appear in a variety of locations throughout the body, but an isolated relapse involving the epididymis is rare. Epididymectomy was performed which naturally removed the patient's right-sided sperm duct system. Especially in the younger age group epididymal masses can lead to fertility problems.