title: Minimally invasive surgery using intraoperative electron-beam radiotherapy for the treatment of soft tissue sarcoma of the extremities with tendon involvement.
abstract: BACKGROUND
  When a soft tissue sarcoma (STS) is located at the distal part of an extremity and involves the tendon, a wide excision usually causes severe functional disability. We therefore developed a minimally invasive surgical technique using intraoperative electron-beam radiotherapy (IOERT) to reduce the incidence of post-operative functional disability in patients with peri-/intra-tendinous STS. We assessed the clinical outcomes of the novel minimally invasive surgery.
  
  
  METHODS
  The study population included five patients who received treatment for distal extremity STSs. After elevating the tumor mass, including the tendon and nerve from the tumor bed with a wide margin, a lead board was inserted beneath the tumor mass to shield the normal tissue. IOERT (25-50 Gy) was then applied, and the tumor excised with care taken to maintain the continuity of the tendon.
  
  
  RESULTS
  In a desmoid patient, local recurrence was observed outside the irradiated field. No cases of neuropathy or bone necrosis were observed. The mean limb function score was excellent in all patients. None of the high-grade sarcoma patients had local recurrence or distant metastasis.
  
  
  CONCLUSIONS
  Although the current study is only a pilot study with a small number of patients, it shows that this minimally invasive procedure has the potential to become a standard treatment option for selected patients.
  
  
  BACKGROUND
  H17-250 (registered 2 November 2005) and H25-250 (modified from H17-250, registered 5 December 2013).
authors: Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie, 514-8507, Japan. matsumin@clin.medic.mie-u.ac.jp.
authors: Akihiko
authors: A
authors: Matsumine
authors: Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie, 514-8507, Japan.
authors: Masaya
authors: M
authors: Tsujii
authors: Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie, 514-8507, Japan.
authors: Tomoki
authors: T
authors: Nakamura
authors: Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie, 514-8507, Japan.
authors: Kunihiro
authors: K
authors: Asanuma
authors: Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie, 514-8507, Japan.
authors: Takao
authors: T
authors: Matsubara
authors: Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie, 514-8507, Japan.
authors: Takuya
authors: T
authors: Kakimoto
authors: Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie, 514-8507, Japan.
authors: Yuki
authors: Y
authors: Yada
authors: Department of Radiology, Mie University School of Medicine, 2-174 Edobashi, Tsu city, Mie, 514-8507, Japan.
authors: Akinori
authors: A
authors: Takada
authors: Department of Radiology, Mie University School of Medicine, 2-174 Edobashi, Tsu city, Mie, 514-8507, Japan.
authors: Noriko
authors: N
authors: Ii
authors: Department of Radiology, Mie University School of Medicine, 2-174 Edobashi, Tsu city, Mie, 514-8507, Japan.
authors: Yoshihito
authors: Y
authors: Nomoto
authors: Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie, 514-8507, Japan.
authors: Akihiro
authors: A
authors: Sudo
mesh_terms: D000293:Adolescent; D000328:Adult; D005121:Extremities / Q000473:pathology / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures; D009361:Neoplasm Invasiveness; D010865:Pilot Projects; D018714:Radiotherapy, Adjuvant; D012509:Sarcoma / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D013710:Tendons / Q000473:pathology / Q000601:surgery*; D016896:Treatment Outcome; D055815:Young Adult
keywords: Clinical outcome; Intraoperative electron-beam radiotherapy (IOERT); Minimally invasive surgery; Soft tissue sarcoma; Tendon involvement