ICHNO-ECHNO 2022 - Abstract Book

S58

ICHNO-ECHNO 2022

Purpose or Objective New energy-based sutureless vessel ligation devices, such as the Thunderbeat (Olympus Medical Systems Corp., Tokyo, Japan), have shown to reduce operative time and limit blood loss in major surgeries such as total laryngectomy and neck dissection. We aimed to assess efficacy and safety of Thunderbeat in harvesting pectoralis major myocutaneous flap (PMMF) reconstruction in this study. Materials and Methods In this prospective, randomized study, patients scheduled to undergo major head and neck surgery including PMMF reconstruction at the ENT department of a major tertiary center were prospectively randomized into two groups. The Thunderbeat device was used in the intervention group, while only standard electrocautery devices were used in the control group. Primary outcome measures were intraoperative blood loss and surgery time during harvesting of the PMMF and postoperative complication rate. Secondary outcomes were the length of postoperative hospitalization and drainage volume. Results Twenty patients were randomized into equal groups. There were no differences in baseline characteristics between the groups. There were no surgical complications connected to the PMMF harvesting in both groups. Differences were all in favor of the intervention group, mostly not significant due to small sample size and large SD. Median surgery time was 15 minutes shorter (40 min vs 55 min p=0.383), mean blood loss was less than half (41 ml vs 92 ml p=0.017), mean hospital stay decreased (11 days vs 24 days p=0.315) and mean drainage volume was also almost the half (141 ml vs 272 ml p=0.022). Conclusion Use of the Thunderbeat during pectoralis myocutaneous pedicle flap reconstruction is safe and reduces blood loss and drainage volume and could positively influence surgery time and hospital stay. However, larger studies are necessary to draw firm conclusions. Purpose or Objective Transoral partial glossectomy procedures for small squamous cell carcinomas can present reconstructive challenges. The defect post partial glossectomy often leads to post-operative scarring, restricted tongue mobility and impaired tongue function which in turn, reduces quality of life. This study explores the use of decellarised collagen matrixes as an adjunct in the management of small partial glossectomy reconstruction. Materials and Methods Following the standard oncological diagnostic and treatment pathway, ten patients underwent transoral partial glossectomy procedures. Decellarised collagen matrixes were used to reconstruct the surgical defect using a standard protocol. Demographic and outcome data were analysed retrospectively with up to one year follow up period. Patient outcomes were assessed by subjective reporting of pain and function experienced. Results The median length of post-operative stay was 5 days. There was no reported post-operative bleeding or infection. Histological margins were clear. Scaffolds remained in situ at 1 week and functional recovery was apparent at 6 weeks post-procedure. Conclusion The results from this study suggest decellarised collagen matrixes could be useful as adjuncts for reconstruction post partial glossectomy. Their use provides better pain control, helps stabilise clot formation, decreases the surface area of raw wound exposed reducing infection potential and minimises scarring. This study supports further exploration and research into the use of these collagen matrixes as a potentially beneficial adjuncts in small partial glossectomy reconstruction cases. PO-0099 Decellarised collagen matrixes as successful adjuncts in transoral partial glossectomy patients K. Mukeshkumar 1 , Z. Sadiq 1 1 Queen Victoria Hospital, Oral and Maxillofacial Surgery, East Grinstead, United Kingdom

PO-0100 Ultrasound-guided resection of tongue cancer

K. de Koning 1 , R. van Es 1 , J.W. Dankbaar 2 , G. Breimer 3 , R. de Bree 1 , R. Noorlag 1

1 UMC Utrecht, Head and Neck Surgical Oncology, Utrecht, The Netherlands; 2 UMC Utrecht, Radiology, Utrecht, The Netherlands; 3 UMC Utrecht, Pathology, Utrecht, The Netherlands Purpose or Objective Squamous cell carcinoma of the tongue (SCCT) is preferably treated by surgery. Free resection margins ( ≥ 5 mm) are essential for local control and disease-free survival. An inadequate margin (<5 mm), which indicates adjuvant re-resections (RR) or local adjuvant radiation therapy (RTx) is not uncommon. RTx causes morbidity with less quality of life. We present our experience with in-vivo ultrasound (US)-guided SCCT resections followed by ex-vivo US-control of the resection