Ten years of advances in head and neck surgery, how does this influence postoperative radiotherapy?
BULLETIN DU CANCER(2020)
Abstract
Minimal invosive surgery and reconstructive surgery tend to become the standord in France in the management of head and neck tumors. The use of endoscopic approaches (through endoscopic endonasal/transorol approaches +/- robot-assisted) instead of open surgery and the use of reconstructive surgery using autologous (flaps) or heterologous materials aim to reduce surgical morbidity by making-up for the loss of substance to restore the function. The impact of these substantial changes in surgical techniques hos not been assessed with respect to postoperative radiotherapy practice. Endoscopic endonasal approaches result, however, in piecemeal resection, which, along the analysis of resection margins (a key prognostic factor), make the interpretation of the quality of resection more complex for radiation oncologists. The definition of tumour subvolumes to be irradiated and doses to these sub-volumes then requires accurate histosurgical mapping and close multidisciplinary consultation between surgeons, pathologists, radiologists and radiation oncologists. Similarly, the increasing use of various types of flops (of soft tissue or bone flaps), adopted to the patient and tumor anatomy, is associated with substantial modifications to the operating bed. The delineation of tumour volumes in postoperative radiotherapy is mode more complex. Tremendous multidisciplinary efforts should now be initiated to fully take advantage of surgical advances and to further optimize the therapeutic index by making radiotherapy also less toxic, i.e. "mini-morbid".
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Key words
Cancer,Head and neck,Surgery,Reconstruction,Minimal invasive,Radiotherapy,Postoperative,CTV
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