title: Intramuscular diffuse-type tenosynovial giant cell tumor of the deltoid muscle in a child.
abstract: Tenosynovial giant cell tumors (GCTs) typically form in the joints or extra-articular soft tissues such as the tendon sheath, and are benign tumors that commonly occur in the hands or wrists in the third to fifth decades of life. However, the diffuse type of extra-articular GCT arising within muscle is a rare soft tissue tumor, especially in a pediatric patient. In this report, we describe the magnetic resonance imaging and sonographic findings of a rare case of intramuscular diffuse-type GCT in the deltoid muscle of a 9-year-old boy.
authors.affiliation: Department of Radiology, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, 149 Sangil-dong, Kangdong-gu, Seoul, 134-727, South Korea.
authors.forename: Seong Jong
authors.initials: SJ
authors.lastname: Yun
authors.forename: Su Yeon
authors.initials: SY
authors.lastname: Hwang
authors.forename: Wook
authors.initials: W
authors.lastname: Jin
authors.forename: Sung Jig
authors.initials: SJ
authors.lastname: Lim
authors.forename: So Young
authors.initials: SY
authors.lastname: Park
mesh_terms: D002648:Child; D003287:Contrast Media; D057645:Deltoid Muscle / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D005682:Gadolinium; D005870:Giant Cell Tumors / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000601:surgery; D018615:Ultrasonography, Doppler, Color / Q000379:methods
chemical_list: D003287:Contrast Media; D005682:Gadolinium