A Case of Multiple Myeloma Relapse Presenting with Proptosis

Multiple myeloma is a plasma cell dyscrasia characterized by neoplastic monoclonal proliferation of plasma cells. In multiplemyeloma abnormal plasma cell proliferation is generally confined to the bone marrow; however, 3% of cases may develop extramedullary involvement. Ocular involvement in multiple myeloma is exceptionally rare and if ocular involvement does occur, it typically presents with intraocular manifestations. We report a rare case of metastatic multiple myeloma with right orbital involvement, found to have multiple isolated right medial rectus masses.