title: Venous hemangioma of the temporalis muscle.
abstract: A 14-year-old girl presented with a diffuse venous hemangioma of the right temporalis muscle. The muscle had become swollen, thinning the underlying zygomatic and temporal bones. Magnetic resonance (MR) imaging demonstrated a diffuse isointense area containing high intensity foci on the T1-weighted images, and a serpiginous high intensity pattern on the T2-weighted images. A biopsy specimen revealed irregularly dilated veins in the fibrous stroma of the muscle. Diffuse abnormal signals on MR images may be a pathognomonic feature of intramuscular venous hemangiomas.
authors.affiliation: Department of Neurosurgery, University of Hokkaido School of Medicine, Sapporo.
authors.forename: M
authors.initials: M
authors.lastname: Tada
authors.forename: Y
authors.initials: Y
authors.lastname: Sawamura
authors.forename: H
authors.initials: H
authors.lastname: Abe
authors.forename: F
authors.initials: F
authors.lastname: Itoh
authors.forename: H
authors.initials: H
authors.lastname: Saito
authors.forename: K
authors.initials: K
authors.lastname: Nagashima
mesh_terms: D000293:Adolescent; D005260:Female; D006391:Hemangioma / Q000175:diagnosis / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D008279:Magnetic Resonance Imaging; D019042:Muscle Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000648:ultrastructure; D013703:Temporal Muscle / Q000473:pathology* / Q000648:ultrastructure