Solitary Extramedullary Plasmacytoma of the Larynx

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Abstract
• Plasmacytomas, indistinguishable histologically from plasma cell tumors arising in bone marrow, occur almost anywhere in the body—usually independently of multiple myeloma. Thus, they represent an isolated area of plasmacytic dyscrasia but occasionally can be the first evidence of multiple myeloma. From 1949 to 1974, six patients with solitary extramedullary plasmacytomas of the larynx were seen at the Mayo Clinic; during this period, approximately 3,100 patients with malignant laryngeal neoplasms were examined. For these six patients, the median age was 53 years (range, 32 to 63 years). The first symptom in five patients was hoarseness (mean duration, nine months). Excision, electrocoagulation, irradiation, or some combination of these constituted effective therapy. Follow-up ranged from 3 to 25 years. The choice of therapy depends on the size, shape, and location of the tumor. Extensive surgery is rarely necessary. (Arch Otolaryngol 103:159-161, 1977)