title: Neurothekeoma in the upper extremity: magnetic resonance imaging and computed tomography findings.
abstract: Neurothekeomas are rare benign tumors of soft tissue that are of presumed neural sheath origin. This report describes the magnetic resonance imaging and computed tomography features of a neurothekeoma in the left forearm of a 38-year-old woman with a 2-year history of a painful mass. Magnetic resonance imaging showed a smooth-bordered ovoid lesion within the inner portion of the extensor digitorum muscle with a Hounsfield number of 15. The lesion had intermediate signal on T1-weighted images, high signal on T2-weighted images, and mild to moderate heterogeneous gadolinium contrast enhancement.
authors.affiliation: Department of Diagnostic Radiology, University of Rochester Medical Center, Rochester, NY 14642, USA.
authors.forename: Howard
authors.initials: H
authors.lastname: O'Rourke
authors.forename: Steven P
authors.initials: SP
authors.lastname: Meyers
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Katzman
mesh_terms: D000328:Adult; D001706:Biopsy / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D005542:Forearm / Q000000981:diagnostic imaging* / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D018321:Neurothekeoma / Q000175:diagnosis* / Q000601:surgery; D010146:Pain / Q000209:etiology; D035583:Rare Diseases; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000601:surgery; D014057:Tomography, X-Ray Computed / Q000379:methods*