title: Plasma cell granuloma of the middle ear and mastoid. Case report.
abstract: We present the case of a 37-year-old man with plasma cell granuloma affecting the middle ear and mastoid. At magnetic resonance imaging scan, the lesion appeared as a homogeneously enhancing mass of soft tissue replacing the majority of the mastoid bone and causing vascular compression. After surgical resection, microscopic examination showed predominantly plasmacytes, and histochemical studies confirmed a polyclonal origin consistent with nonneoplastic plasma cell granuloma. We believe this is the first case report of plasma cell granuloma affecting the middle ear and mastoid.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Kaiser Permanente Medical Center, Redwood City, California.
authors.forename: N C
authors.initials: NC
authors.lastname: Benton
authors.forename: H W
authors.initials: HW
authors.lastname: Korol
authors.forename: L T
authors.initials: LT
authors.lastname: Smyth
mesh_terms: D000328:Adult; D001847:Bone Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D004427:Ear Diseases / Q000000981:diagnostic imaging / Q000473:pathology; D004432:Ear, Middle; D006104:Granuloma, Plasma Cell / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008297:Male; D008416:Mastoid; D011859:Radiography