The management of retroperitoneal lymphadenopathy in spermatocytic seminoma of the testicle.

Spermatocytic seminoma is an extremely rare clinically and pathologically distinct subtype of testicular cancer that infrequently metastasizes and typically yields a good prognosis. While retroperitoneal lymphadenopathy in the typical testicular cancer patient often harbors metastatic disease, in a patient with spermatocytic seminoma this finding should be viewed with suspicion, and pathologic confirmation of metastatic disease is essential. We present a 49-year-old man with spermatocytic seminoma and retroperitoneal and mesenteric lymphadenopathy who was found to have concurrent low-grade lymphoma.