title: Intramuscular diffuse-type giant cell tumor within the hamstring muscle.
abstract: Diffuse-type giant cell tumor (D-TGCT) is known as a synonym for pigmented villonodular synovitis (PVS), a condition usually found in the large joints. We report an extremely rare case of D-TGCT which was located within the hamstring muscle. The lesion was an incidental finding in a 62-year-old man who underwent positron emission tomography (PET) as part of a staging evaluation for gastric cancer. The lesion was resected. There has been neither metastasis nor recurrence during the 6-month period since resection. This case demonstrates that PVS/D-TGCT may have a high SUV on PET imaging, and for this reason PET may be useful for detecting both the tumor and any recurrence.
authors.affiliation: Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Fukuoka, 812-8582 Fukuoka, Japan. yoshidat@ortho.med.kyushu-u.ac.jp
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Yoshida
authors.forename: Akio
authors.initials: A
authors.lastname: Sakamoto
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Tanaka
authors.forename: Yukihide
authors.initials: Y
authors.lastname: Iwamoto
authors.forename: Yoshinao
authors.initials: Y
authors.lastname: Oda
authors.forename: Teiyu
authors.initials: T
authors.lastname: Izumi
authors.forename: Masazumi
authors.initials: M
authors.lastname: Tsuneyoshi
mesh_terms: D002081:Buttocks / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D005500:Follow-Up Studies; D005870:Giant Cell Tumors / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D033162:Incidental Findings; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D019042:Muscle Neoplasms / Q000175:diagnosis* / Q000601:surgery; D016609:Neoplasms, Second Primary / Q000175:diagnosis* / Q000601:surgery; D049268:Positron-Emission Tomography / Q000379:methods; D035583:Rare Diseases; D013274:Stomach Neoplasms / Q000175:diagnosis*