title: Computed tomography and magnetic resonance imaging findings of soft tissue perineurioma.
abstract: Soft tissue perineurioma is an uncommon benign peripheral nerve sheath tumor, although it is the most common subtype of perineuriomas. We present a case of soft tissue perineurioma in the left groin of a 48-year-old man. Precontrast computed tomography showed a homogeneous hypodense mass that showed faint enhancement. The mass appeared with hypointensity on T1-weighted magnetic resonance (MR) images and heterogeneous hyperintensity on T2-weighted MR images. Slight contrast uptake was noted on enhanced T1-weighted MR images with fat suppression. Although these CT and MR imaging findings were nonspecific, the overall imaging features are similar to those of schwannomas.
authors.affiliation: Division of Diagnostic Radiology and Nuclear Medicine, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan. mmiyake@ncc.go.jp
authors.forename: Mototaka
authors.initials: M
authors.lastname: Miyake
authors.forename: Ukihide
authors.initials: U
authors.lastname: Tateishi
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Maeda
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Arai
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Seki
authors.forename: Kazuro
authors.initials: K
authors.lastname: Sugimura
mesh_terms: D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D018317:Nerve Sheath Neoplasms / Q000175:diagnosis* / Q000473:pathology; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000473:pathology; D014057:Tomography, X-Ray Computed