Testicular cancers detected in older males are mostly testicular lymphomas. Primary testicular lymphoma (PTL) is a rare, clinically aggressive form of extranodal lymphoma. In population-based studies, the incidence of PTL is 0.09-0.26/100.000. The vast majority of PTL are diffuse large B-cell lymphoma (DLBCL).
We present a case of PTL diagnosed in a 68-year-old male patient and also, we discuss the incidence, clinical presentation, prognostic factors and management of this rare pathology in the light of current literature. Histopathological and immunohistochemical exams of the patient confirmed the diagnosis of DLBCL after radical orchiectomy. According to the internal prognostic index (IPI), patients’ IPI score was evaluated as 5 and according to Ann Arbor staging, patients’ stage was interpreted as grade 3E. Cyclophosphamide, vincristine, etoposide, and prednisolone chemotherapy was planned for the patient and until now, the patient received his first chemotherapy regimen.
Primary testicular lymphoma should be kept in mind for every patient who admits with a testicular mass, especially in advanced age. Misinterpreatation of the clinical findings can delay the definitive diagnosis. Primary testicular lymphoma should be managed with a multi-disciplinary team including urologists, medical and radiation oncologists.

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