Unusual Extramedullary Plasmacytoma of the Head and Neck: A Case Series

Extramedullary plasmacytomas are rare tumors and account for 1%‐4% of all plasma cell tumors. Up to 80% of extramedullary plasmacytomas occur in the head and neck, and 10%‐20% have associated lymph node involvement. We presented the imaging findings of 7 unusual cases of extramedullary plasmacytomas and reviewed the relevant literature.