[Primary Diffuse Large B-Cell Lymphoma of the Spermatic Cord : A Case Report].

A 66-year-old man came to our department with the chief complaint of a right inguinal painless mass. He was diagnosed with a right spermatic cord tumor and underwent a right high orchiectomy with wide excision. The results of hematoxylin eosin staining and immunostaining procedures showed mucosa-associated lymphoid tissue (MALT) lymphoma originating from the lymphoid tissue of spermatic cord. The patient was referred to the department of hematology at another hospital for treatment. As results of additional immunostaining procedures at that hospital, the pathological diagnosis was diffuse large B-cell lymphoma (DLBCL). The positron emission tomography-computed tomography revealed no residual tumor or metastasis, and the final diagnosis was primary DLBCL Stage I of the spermatic cord. The patient was treated with 6 courses of R-THP-COP, 2 courses of Rituximab, and 3 courses of intrathecal chemotherapy, including Methotrexate, Ara-C, and Prednisolone. In addition, prophylactic radiation therapy to another testis was planned. Primary DLBCL of the spermatic cord is rare, and the standard treatment is the same as that for testicular DLBCL.