title: Case report. Plasmacytoma presenting as unilateral proptosis.
abstract: A 49-year-old man presented with proptosis of the right eye. An x-ray film of the skull showed a lytic lesion in the right frontal bone. No other skeletal lesions were found. Immunoelectrophoretic analysis showed a monoclonal elevation of IgG level. A soft orbital tumor near the foramen of the optic nerve was removed and found to be a plasmacytoma. The patient was given local irradiation. When IgG level increased about four months after surgery, he was treated with chemotherapy. IgG level decreased and no further skeletal lesions were found.
mesh_terms: D003937:Diagnosis, Differential; D005094:Exophthalmos / Q000175:diagnosis*; D006801:Humans; D007074:Immunoglobulin G; D008297:Male; D008875:Middle Aged; D009918:Orbital Neoplasms / Q000175:diagnosis* / Q000276:immunology; D010954:Plasmacytoma / Q000175:diagnosis* / Q000276:immunology
chemical_list: D007074:Immunoglobulin G