Plasma cell dyscrasias and the head and neck.

Structures in the head and neck (bones, soft tissues, lymph nodes, mucosa) are variably affected by plasma cell dyscrasias. Involvement can be manifested by localized lesions (extramedullary plasmacytoma or solitary plasmacytoma of bone) or by more diffuse disease (multiple myeloma). We present a contemporary review of these disorders with emphasis on patient outcomes.