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  • Title: Free latissimus dorsi musculocutaneous flap for external hemipelvectomy reconstruction.
    Author: Tashiro K, Arikawa M, Fukunaga Y, Nakatani F, Kobayashi E, Kawai A, Miyamoto S.
    Journal: Microsurgery; 2019 Feb; 39(2):138-143. PubMed ID: 30191595.
    Abstract:
    INTRODUCTION: External hemipelvectomy is one of the most extensive surgical procedures for locally advanced pelvic tumors. Stump coverage with the local tissues can be difficult in recurrent cases. Herein, we report our experience with immediate stump coverage using a free latissimus dorsi musculocutaneous (LDMC) flap after external hemipelvectomy for recurrent pelvic malignancies. METHODS: Six patients underwent external hemipelvectomy and immediate reconstruction using a free LDMC flap between November 2012 and June 2017. The mean age of the patients was 65 years (range: 63-69 years). The primary tumors were myxoid liposarcoma, chondrosarcoma, osteosarcoma, squamous cell carcinoma, and pleomorphic liposarcoma. A free LDMC flap was harvested from the ipsilateral back and transferred to the defect. When an intercostal nerve was found at the recipient site, the thoracodorsal nerve was coaptated with the intercostal nerve to reinnervate the muscle. RESULTS: The mean flap size was 23 × 10 cm and the range was 20 × 8-27 × 13.5 cm. The contralateral deep inferior epigastric vessels were used as recipient vessels in all patients. Thoracodorsal-intercostal nerve coaptation was performed in 2 patients. The flap survived in all patients. Three patients had complications of abscess formation. No patient developed postoperative hernia. CONCLUSION: Although it is challenging to do reconstruction after external hemipelvectomy, a free LDMC flap has several advantages, including a large coverage area, stability of circulation, ease of elevation, and preservation of the strength of the remaining abdominal wall. Technical tips for selecting anastomosis vessels are important and nerve coaptation could be effective.
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