Spermatocytic tumor with extensive lymphovascular invasion in a young male.

Spermatocytic tumors are rare testicular cancers, accounting for less than 1 % of all testicular neoplasms, usually affecting older men. This report details a 35-year-old male with a spermatocytic tumor featuring extensive lymphovascular invasion. The patient had a painless, slow-growing right testicular mass, with normal serum tumor markers. Ultrasound and CT scans suggested malignancy. Post-orchiectomy, histopathology confirmed a spermatocytic tumor with polymorphic cells and lymphovascular invasion. Immunohistochemical staining was positive for SALL4 and CD117, negative for OCT4, AFP, and CD30. The patient underwent chemotherapy and remained recurrence-free for a year, highlighting the need for accurate diagnosis and long-term monitoring.