Image Description
This testicular plasmacytoma is from a 70 y/o male. He had a long-standing history of multiple myeloma and was apparently in remission following chemotherapy and bone marrow transplantation. He presented with progressive enlargement of right testicle and underwent radical orchiectomy. There was a 4.0 cm soft, red mass replacing most of the testicular parenchyma surrounded by a rim of uninvolved tissue. The tumor was positive for CD38, lambda light chains and CD45 (about 10% of cells). The stains for CD20, kappa light chains, placental-like alkaline phosphate and cytokeratin AE1/AE3 were negative.
The image shows sheets of immature appearing plasma cells with scattered highly atypical multinucleated cells.
The image shows sheets of immature appearing plasma cells with scattered highly atypical multinucleated cells.