Orofacial plasmacytosis: a management conundrum.

Plasmacytosis of the mucous membrane is a rare, benign, inflammatory condition of poorly understood aetiology that affects the mucous membranes. Most reported cases involve the gingival tissues, larynx, and occasionally the lips. We describe an interesting case of orofacial plasmacytosis that affected the lower lip, mandibular gingiva, and buccal mucosa. It mimicked an oral squamous cell carcinoma and presented a management dilemma.