Abstract
Solitary plasmocytoma is a rare malignant tumor, belonging to the larger family of plasma cell proliferative diseases observed in bones. The mandible localization reported here is extremely rare. A 57-year-old man consulted for a tumefaction of the right mandible. Physical examination revealed a mandibular tumor with an osseous consistency covered by a healthy mucous. Radiologically, the tissue processed from the mandible, which presented a defect and an eroded cortical. Hemimandibulectomy was performed. Pathologic examination of the operative specimen demonstrated plasmocytoma. Complementary radiotherapy was performed. Outcome at 13 months was favorable, without recurrence of multiple myeloma. Plasma cell tumors are rare, about 10% of them are solitary plasmocytomas observed in intra- or extramedullar sites. Pathology is required for confirmation. An exhaustive assessment is needed to rule out multiple myeloma. Most solitary forms are observed in the spine. Appropriate treatment combines surgery and radiotherapy. Careful surveillance is required because of the frequent progression to multiple myeloma.
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