Venous hemangioma of the temporalis muscle.
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.
Tada
M
M
Department of Neurosurgery, University of Hokkaido School of Medicine, Sapporo.
Sawamura
Y
Y
Abe
H
H
Itoh
F
F
Saito
H
H
Nagashima
K
K
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