title: Multiple myeloma presenting as an oro-antral fistula.
mesh_terms: D000328:Adult; D005147:Facial Bones; D005260:Female; D006801:Humans; D009101:Multiple Myeloma / Q000150:complications / Q000175:diagnosis*; D009957:Oroantral Fistula / Q000175:diagnosis* / Q000209:etiology; D012888:Skull Neoplasms / Q000150:complications / Q000175:diagnosis*