Objective: [corrected] To report a rare case of secondary testicular plasmocytoma in the context of a testicular mass.

Methods: We introduced a patient with plasmocytoma and a testicular infiltration of his systemic affection.

Results: An inguinal orquiectomy was performed to treat the testicular infiltration and no recurrence of the process was seen after 6 months of follow up.

Conclusions: Plasmacytoma is a plasma cell tumor that involves bone marrow or extramedullary sites. Testicular infiltration by plasma cells such as plasmacytoma happens in only 2% of cases of all plasma cell neoplasm