title: Pictorial review: benign and malignant enlargement of the pterygo-masseteric muscle complex.
abstract: Seven cases of unilateral enlargement of the pterygoid and/or masseter muscles due to haemangioma (1), benign masseteric hypertrophy (2), rhabdomyosarcoma (2), leukaemic infiltration (1) and non-Hodgkin's lymphoma (1) are presented. The differential diagnosis of pterygo-masseteric muscle enlargement is outlined and the usefulness of computed tomography (CT) discussed.
authors.affiliation: Department of Radiology, Addenbrooke's Hospital, Cambridge.
authors.forename: P A
authors.initials: PA
authors.lastname: Set
authors.forename: J M
authors.initials: JM
authors.lastname: Somers
authors.forename: P D
authors.initials: PD
authors.lastname: Britton
authors.forename: C E
authors.initials: CE
authors.lastname: Freer
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006391:Hemangioma / Q000000981:diagnostic imaging; D006801:Humans; D006984:Hypertrophy / Q000000981:diagnostic imaging; D017254:Leukemic Infiltration; D008228:Lymphoma, Non-Hodgkin / Q000000981:diagnostic imaging; D008297:Male; D008406:Masseter Muscle / Q000000981:diagnostic imaging / Q000473:pathology*; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000000981:diagnostic imaging / Q000473:pathology; D011626:Pterygoid Muscles / Q000000981:diagnostic imaging / Q000473:pathology*; D012208:Rhabdomyosarcoma / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed