title: Giant cell tumor of soft tissue: a case report with emphasis on MR imaging.
abstract: Giant cell tumor of soft tissue is a rare neoplasm, histologically resembling giant cell tumor of bone. In this report, we describe a deep and solid giant cell tumor of soft tissue interpreted as a benign soft tissue tumor based on magnetic resonance (MR) findings with hypointense to intermediate signals on T2-weighted images and impeded diffusivity (water movement) on diffusion-weighted imaging (DWI), which could suggest a giant-cell-containing benign soft tissue tumor, despite the malignancy suggested by 18F-fluorodeoxyglucose positron emission tomography-computed tomography in a 35-year-old male. To our knowledge, this report introduces the first deep, solid giant cell tumor of soft tissue with MR features of a giant-cell-containing benign soft tissue tumor, despite the malignancy-mimicking findings on 18F-FDG PET-CT.
authors.affiliation: Department of Radiology, Seoul St. Mary's Hospital, School of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 137-701, South Korea.
authors.forename: Moon Young
authors.initials: MY
authors.lastname: Lee
authors.forename: Won-Hee
authors.initials: WH
authors.lastname: Jee
authors.forename: Chan Kwon
authors.initials: CK
authors.lastname: Jung
authors.forename: Ie Ryung
authors.initials: IeR
authors.lastname: Yoo
authors.forename: Yang-Guk
authors.initials: YG
authors.lastname: Chung
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005870:Giant Cell Tumors / Q000175:diagnosis*; D006801:Humans; D007866:Leg / Q000473:pathology*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D064847:Multimodal Imaging / Q000379:methods; D049268:Positron-Emission Tomography / Q000379:methods; D012983:Soft Tissue Neoplasms / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed / Q000379:methods
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