title: Giant cell tumor of the tendon sheath mimicking a primary intramedullary metatarsal tumor.
abstract: Giant cell tumor of the tendon sheath (GCTTS) is one of the most common benign soft tissue tumors in the extremities, and is frequently associated with bone abnormalities. Although extrinsic bone erosion is the most common bone abnormality associated with GCTTS, intraosseous invasion of GCTTS occurs rarely and may mimic a primary bone tumor, making diagnosis more challenging. We report an unusual imaging presentation of GCTTS mimicking a primary intramedullary metatarsal tumor and review the literature on the frequency of bone involvement of GCTTS.
authors.affiliation: Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA. lantosj@mskcc.org
authors.forename: Joshua E
authors.initials: JE
authors.lastname: Lantos
authors.forename: Meera
authors.initials: M
authors.lastname: Hameed
authors.forename: John H
authors.initials: JH
authors.lastname: Healey
authors.forename: Sinchun
authors.initials: S
authors.lastname: Hwang
mesh_terms: D000328:Adult; D001859:Bone Neoplasms; D003287:Contrast Media; D003937:Diagnosis, Differential; D005870:Giant Cell Tumors / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008682:Metatarsal Bones; D011859:Radiography; D012983:Soft Tissue Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D013710:Tendons / Q000000981:diagnostic imaging* / Q000473:pathology; D055815:Young Adult
chemical_list: D003287:Contrast Media