title: Multiple localized giant cell tumor of the tendon sheath (GCTTS) affecting a single tendon: a very rare case report and review of recent cases.
abstract: BACKGROUND
  Giant cell tumors of the tendon sheath (GCTTS) are very common. More recently, a small number of case reports have identified the presence of multifocal GCTTS in the hand. These case reports have identified the presence of a maximum of two simultaneous lesions of a giant cell tumor affecting the same tendon sheath. We present an exceptionally rare case of simultaneous multiple localized GCTTS in which five lesions were identified on a single tendon simultaneously. This number of lesions on a single tendon has never been previously reported.
  
  
  METHODS
  A 37-year-old tree surgeon initially complained of pain in the region of the base of the ring and little fingers. A month later, he developed multiple soft tissue swellings at these sites and a soft tissue mass in the center of the palm relating to the left ring finger. A magnetic resonance imaging (MRI) scan suggested multiple GCTTS. These masses were excised completely without MRI evidence of a recurrence. Multiple GCTTS should be a differential diagnosis of multiple soft tissue swellings in the hand with an MRI scan and complete excision being the appropriate imaging and treatment modality respectively.
authors.affiliation: New Cross Hospital, Wolverhampton, UK.
authors.forename: Talvinder
authors.initials: T
authors.lastname: Singh
authors.forename: Saqib
authors.initials: S
authors.lastname: Noor
authors.forename: Adrian W
authors.initials: AW
authors.lastname: Simons
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005385:Fingers; D005500:Follow-Up Studies; D005870:Giant Cell Tumors / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D019637:Orthopedic Procedures / Q000379:methods; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000601:surgery; D013710:Tendons / Q000473:pathology* / Q000601:surgery