Oral plasmacytoma in multiple myeloma patients: report of 18 cases.

OBJECTIVES

Plasmacytoma is a malignant neoplasm of plasma cells with or without an underlying multiple myeloma (MM). Plasmacytoma rarely involves the oral mucosa and jaw bones. We aimed to describe oral plasmacytoma in MM patients.

STUDY

DESIGN

Patients with oral plasmacytoma seen at the Oral Medicine clinic from 2007 to 2024 were included in this study.

RESULTS

There were 18 patients (26 oral plasmacytomas). The median age was 60.5 years (72.3% females). The most common symptoms were pain and bleeding. Ten patients had gnathic involvement, and 8 patients had soft tissue disease without bony involvement. The gingiva was the most common site (50.0%) and buccolingual involvement was seen in 38.5% of cases. Treatment directed at the oral disease was rendered in 11 patients. Over 90% of patients died with a median of 5 months.

CONCLUSIONS

MM patients may present with oral involvement most commonly on the gingiva with frequent buccal and lingual involvement.