7th ICHNO Abstract book

page 80 7 th ICHNO Conference International Conference on innovative approaches in Head and Neck Oncology 14 – 16 March 2019 Barcelona, Spain __________________________________________________________________________________________ 7th ICHNO

defect.

with health professionals caring for these needs from time of diagnosis till end of life.

Poster: Minimal invasive and reconstructive surgery

PO-150 Transpositional facial artery myomucosal island flap for reconstruction of early tongue cancer D.H. Kim 1 , D.K. Lee 2 , D.H. Lee 1 , S.Y. Shin 3 1 Inje University- College of Medicine, Head and Neck Surgery, Busan, Korea Republic of ; 2 Dong-A university- College of Medicine, Head and Neck Surgery, Busan, Korea Republic of ; 3 Clear well Hospital- Ceo-je city, Radiology, Geo-je, Korea Republic of Purpose or Objective Facial artery buccal myomucosal island flap is useful technique for oral and oropharyngeal reconstruction. However, this flap has shortcoming that pedicle lies between upper and lower tooth that lead to risk of pedicle injury. Therefore, some authors reported modifications of this technique which are ‘transpositional’ or ‘tunnelized’ facial artery buccal myomucosal flap. These kind of techniques that facial artery myomucosal flap is delivered to the neck through the paramandibular soft tissue tunnel and rotated into the medial side of the mandible for one stage oral and oropharyngeal reconstruction. We used this technique for 10 cases of early tongue cancers (Clinical Stage I, II) and achieved successful outcomes without any significant complications include flap necrosis, facial nerve paralysis and recurrence (Follow up period ranged from 6 months to 52 months). Material and Methods Patients selection: Clinically T1 or T2 tongue cancer without nodal metastasis and distant metastasisSurgical techniques : After resection of primary tongue cancer, sentinel node dissection was performed to manage clinically N0 neck. During sentinel node dissection, the facial artery and facial vein were dissected from the submandibular gland and soft tissue. And then, facial artery course was marked on the intraoral buccal mucosal surface with a Doppler. An elliptical myomucosal flap was elevated with careful manner to avoid injury of pedicle and Stensen’s duct. Simultaneously, cheek flap was elevated along the facial artery and facial vein. After isolated the facial artery myomucosal island flap, this flap was delivered into the neck via cheek tunnel (Figure 1.). At this time, marginal branch of facial nerve crossing facial artery was elevated to bring down the island flap. We recommend that this procedure is performed the last step of flap elevation to avoid the facial nerve paralysis. Then the flap was transposed into the oral space through a formed tunnel by blunt dissection through the mouth floor (Figure 2.). The donor site of intraoral buccal mucosal defect was closed primary or AllodermTM patch apply in case of large

Results All 10 cases were successfully harvested and no flap necrosis was observed in any of cases. The mean hospital stay was 17.6days (range 10 -29days). Temporally facial paralysis occurred in the first three cases. These complications fully recovered within 3months (range 1- 3months). The mean operation time was 384 minutess (range 240-935minutes). Recurrence was not reported. (Follow up period range 6 - 52months). Conclusion Transpositional facial artery myomucosal island flap was very useful for reconstruction of early stage tongue cancer. This technique not only can replace the free flap reconstruction (eg, Forearm free flap) that widely used for reconstruction of early tongue cancer but also reduce the morbidity of donor site. PO-151Epidemiology aspects of laryngeal cancer in the Republic of Belarus for the period from 2008 to 2017 Z. Kaliadzich 1 , D. Yena 2 , D. Tzerkovsky 3 1 N.N. Alexandrov National Cancer Center- Republic of Belarus, Head and Neck tumors Laboratory, Minsk, Belarus; 2 N.N. Alexandrov National Cancer Center- Republic of Belarus, Department of head and neck tumors, Minsk, Belarus; 3 N.N. Alexandrov National Cancer Center of Belarus, Laboratory of fotodinamic therapy and hyperthermia, Minsk, Belarus Purpose or Objective A cancer of larynx is a serious and social problem of modern clinical oncology. Among all forms of malignant Poster: Epidemiology and prevention