We thank all the patients who participated in this study for their cooperation. This research was supported by the project fund of the Science and Technology Department of Sichuan Province. (Grant No. 2021YFS0103).

The study was approved by the medical ethics committee of West China Hospital, Sichuan University (2018[457]), and written informed consent was obtained from all subjects.
1. Preoperative preparation
<ol>
	<li>Patient eligibility
	<ol>
		<li>Select patients who have stringent cosmetic requirements and meet the following criteria: (1) a benign nodule &#60;4 cm in diameter; (2) a differentiated thyroid carcinoma (DTC) &#60;2 cm in diameter without clinical lateral lymph node m...

<ol>
	<li>Latifi, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Outcomes+of+1,327+patients+operated+on+through+twelve+multispecialty+surgical+volunteerism+missions:+A+retrospective+cohort+study.">Outcomes of 1,327 patients operated on through twelve multispecialty surgical volunteerism missions: A retrospective cohort study.</a> International Journal of Surgery. 60, 15-21 (2018).</li><li>Liao, D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transoral+neck+surgery+prevents+attentional+bias+towards+the+neck+compared+to+open+neck+surgery.">Transoral neck surgery prevents attentional bias towards the neck compared to open neck surgery.</a> Laryngoscope. 130 (6), 1603-1608 (2020).</li><li>Best, A. R., Shipchandler, T. Z., Cordes, S. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Midcervical+scar+satisfaction+in+thyroidectomy+patients.">Midcervical scar satisfaction in thyroidectomy patients.</a> Laryngoscope. 127 (5), 1247-1252 (2017).</li><li>Choi, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Impact+of+postthyroidectomy+scar+on+the+quality+of+life+of+thyroid+cancer+patients.">Impact of postthyroidectomy scar on the quality of life of thyroid cancer patients.</a> Annals of Dermatology. 26 (6), 693-699 (2014).</li><li>Kang, S. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Robotic+thyroid+surgery+using+a+gasless,+transaxillary+approach+and+the+da+Vinci+S+system:+The+operative+outcomes+of+338+consecutive+patients.">Robotic thyroid surgery using a gasless, transaxillary approach and the da Vinci S system: The operative outcomes of 338 consecutive patients.</a> Surgery. 146 (6), 1048-1055 (2009).</li><li>Choe, J. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Endoscopic+thyroidectomy+using+a+new+bilateral+axillo-breast+approach.">Endoscopic thyroidectomy using a new bilateral axillo-breast approach.</a> World Journal of Surgery. 31 (3), 601-606 (2007).</li><li>Inukai, M., Usui, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Clinical+evaluation+of+gasless+endoscopic+thyroid+surgery.">Clinical evaluation of gasless endoscopic thyroid surgery.</a> Surgery Today. 35 (3), 199-204 (2005).</li><li>Terris, D. J., Singer, M. C., Seybt, M. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Robotic+facelift+thyroidectomy:+II.+Clinical+feasibility+and+safety.">Robotic facelift thyroidectomy: II. Clinical feasibility and safety.</a> Laryngoscope. 121 (8), 1636-1641 (2011).</li><li>Russell, J. O., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transoral+thyroid+and+parathyroid+surgery+via+the+vestibular+approach-a+2020+update.">Transoral thyroid and parathyroid surgery via the vestibular approach-a 2020 update.</a> Gland Surgery. 9 (2), 409-416 (2020).</li><li>Chai, Y. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transoral+endoscopic+thyroidectomy+for+papillary+thyroid+microcarcinoma:+Initial+experience+of+a+single+surgeon.">Transoral endoscopic thyroidectomy for papillary thyroid microcarcinoma: Initial experience of a single surgeon.</a> Annals of Surgical Treatment and Research. 93 (2), 70-75 (2017).</li><li>Anuwong, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transoral+endoscopic+thyroidectomy+vestibular+approach:+A+series+of+the+first+60+human+cases.">Transoral endoscopic thyroidectomy vestibular approach: A series of the first 60 human cases.</a> World Journal of Surgery. 40 (3), 491-497 (2016).</li><li>Arora, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+perception+of+scar+cosmesis+following+thyroid+and+parathyroid+surgery:+A+prospective+cohort+study.">The perception of scar cosmesis following thyroid and parathyroid surgery: A prospective cohort study.</a> International Journal of Surgery. 25, 38-43 (2016).</li><li>Dionigi, G., Chai, Y. J., Tufano, R. P., Anuwong, A., Kim, H. Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transoral+endoscopic+thyroidectomy+via+a+vestibular+approach:+Why+and+how.">Transoral endoscopic thyroidectomy via a vestibular approach: Why and how.</a> Endocrine. 59 (2), 275-279 (2018).</li><li>Wang, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Implementation+of+intraoperative+neuromonitoring+for+transoral+endoscopic+thyroid+surgery:+A+preliminary+report.">Implementation of intraoperative neuromonitoring for transoral endoscopic thyroid surgery: A preliminary report.</a> Journal of Laparoendoscopic and Advanced Surgical Techniques. Part A. 26 (12), 965-971 (2016).</li><li>Wu, G. Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Endoscopic+central+lymph+node+dissection+via+breast+combined+with+oral+approach+for+papillary+thyroid+carcinoma:+A+preliminary+study.">Endoscopic central lymph node dissection via breast combined with oral approach for papillary thyroid carcinoma: A preliminary study.</a> World Journal of Surgery. 41 (9), 2280-2282 (2017).</li><li>Yang, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Complete+endoscopic+thyroidectomy+via+oral+vestibular+approach+versus+areola+approach+for+treatment+of+thyroid+diseases.">Complete endoscopic thyroidectomy via oral vestibular approach versus areola approach for treatment of thyroid diseases.</a> Journal of Laparoendoscopic and Advanced Surgical Techniques. Part A. 25 (6), 470-476 (2015).</li><li>Su, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Does+the+number+of+parathyroid+glands+autotransplanted+affect+the+incidence+of+hypoparathyroidism+and+recovery+of+parathyroid+function.">Does the number of parathyroid glands autotransplanted affect the incidence of hypoparathyroidism and recovery of parathyroid function.</a> Surgery. 164 (1), 124-129 (2018).</li><li>Doyle, D. J., Hendrix, J. M., Garmon, E. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=American+Society+of+Anesthesiologists+Classification.">American Society of Anesthesiologists Classification.</a> StatPearls. , (2022).</li><li>Park, J. O., Kim, M. R., Kim, D. H., Lee, D. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transoral+endoscopic+thyroidectomy+via+the+trivestibular+route.">Transoral endoscopic thyroidectomy via the trivestibular route.</a> Annals of Surgical Treatment and Research. 91 (5), 269-272 (2016).</li><li>Dionigi, G., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transoral+endoscopic+thyroidectomy:+Preliminary+experience+in+Italy.">Transoral endoscopic thyroidectomy: Preliminary experience in Italy.</a> Updates in Surgery. 69 (2), 225-234 (2017).</li><li>Udelsman, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Trans-oral+vestibular+endocrine+surgery:+A+new+technique+in+the+United+States.">Trans-oral vestibular endocrine surgery: A new technique in the United States.</a> Annals of Surgery. 264 (6), 13-16 (2016).</li><li>Choe, J. -. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Endoscopic+thyroidectomy+using+a+new+bilateral+axillo-breast+approach.">Endoscopic thyroidectomy using a new bilateral axillo-breast approach.</a> World Journal of Surgery. 31 (3), 601-606 (2007).</li><li>Son, S. K., Kim, J. H., Bae, J. S., Lee, S. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Surgical+safety+and+oncologic+effectiveness+in+robotic+versus+conventional+open+thyroidectomy+in+thyroid+cancer:+A+systematic+review+and+meta-analysis.">Surgical safety and oncologic effectiveness in robotic versus conventional open thyroidectomy in thyroid cancer: A systematic review and meta-analysis.</a> Annals of Surgical Oncology. 22 (9), 3022-3032 (2015).</li><li>Lee, K. E., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Robotic+thyroidectomy+by+bilateral+axillo-breast+approach:+Review+of+1,026+cases+and+surgical+completeness.">Robotic thyroidectomy by bilateral axillo-breast approach: Review of 1,026 cases and surgical completeness.</a> Surgical Endoscopy. 27 (8), 2955-2962 (2013).</li><li>Kim, M. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Yonsei+experience+of+5000+gasless+transaxillary+robotic+thyroidectomies.">Yonsei experience of 5000 gasless transaxillary robotic thyroidectomies.</a> World Journal of Surgery. 42 (2), 393-401 (2018).</li><li>Jitpratoom, P., Ketwong, K., Sasanakietkul, T., Anuwong, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transoral+endoscopic+thyroidectomy+vestibular+approach+(TOETVA)+for+Graves'+disease:+A+comparison+of+surgical+results+with+open+thyroidectomy.">Transoral endoscopic thyroidectomy vestibular approach (TOETVA) for Graves' disease: A comparison of surgical results with open thyroidectomy.</a> Gland Surgery. 5 (6), 546-552 (2016).</li><li>Yi, J. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transoral+endoscopic+surgery+for+papillary+thyroid+carcinoma:+Initial+experiences+of+a+single+surgeon+in+South+Korea.">Transoral endoscopic surgery for papillary thyroid carcinoma: Initial experiences of a single surgeon in South Korea.</a> Annals of Surgical Treatment and Research. 95 (2), 73-79 (2018).</li><li>Wang, D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Transoral+thyroidectomy+vestibular+approach+versus+non-transoral+endoscopic+thyroidectomy:+A+comprehensive+systematic+review+and+meta-analysis.">Transoral thyroidectomy vestibular approach versus non-transoral endoscopic thyroidectomy: A comprehensive systematic review and meta-analysis.</a> Surgical Endoscopy. 36 (3), 1739-1749 (2022).</li><li>Wang, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Safety+of+central+compartment+neck+dissection+for+transoral+endoscopic+thyroid+surgery+in+papillary+thyroid+carcinoma.">Safety of central compartment neck dissection for transoral endoscopic thyroid surgery in papillary thyroid carcinoma.</a> Japanese journal of clinical oncology. 50 (4), 387-391 (2020).</li><li>Sun, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparison+of+transoral+endoscopic+thyroidectomy+vestibular+approach,+total+endoscopic+thyroidectomy+via+areola+approach,+and+conventional+open+thyroidectomy:+A+retrospective+analysis+of+safety,+trauma,+and+feasibility+of+central+neck+dissection+in+the+treatment+of+papillary+thyroid+carcinoma.">Comparison of transoral endoscopic thyroidectomy vestibular approach, total endoscopic thyroidectomy via areola approach, and conventional open thyroidectomy: A retrospective analysis of safety, trauma, and feasibility of central neck dissection in the treatment of papillary thyroid carcinoma.</a> Surgical Endoscopy. 34 (1), 268-274 (2020).</li><li>Tanaka, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparative+study+on+bacterial+flora+of+oral+cavity+and+upper+pharynx+in+healthy+elderly.">Comparative study on bacterial flora of oral cavity and upper pharynx in healthy elderly.</a> The Japanese Journal of Antibiotics. 54, 19-21 (2001).</li><li>Guo, F., Wang, W., Zhu, X., Xiang, C., Wang, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparative+study+between+endoscopic+thyroid+surgery+via+the+oral+vestibular+approach+and+the+areola+approach.">Comparative study between endoscopic thyroid surgery via the oral vestibular approach and the areola approach.</a> Journal of Laparoendoscopic and Advanced Surgical Techniques. 30 (2), 170-174 (2019).</li><li>Chae, S., Min, S. Y., Park, W. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparison+study+of+robotic+thyroidectomies+through+a+bilateral+axillo-breast+approach+and+a+transoral+approach.">Comparison study of robotic thyroidectomies through a bilateral axillo-breast approach and a transoral approach.</a> Journal of Laparoendoscopic and Advanced Surgical Techniques. 30 (2), 175-182 (2020).</li><li>Kim, W. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+comparison+study+of+the+transoral+and+bilateral+axillo-breast+approaches+in+robotic+thyroidectomy.">A comparison study of the transoral and bilateral axillo-breast approaches in robotic thyroidectomy.</a> Journal of Surgical Oncology. 118 (3), 381-387 (2018).</li><li>Nguyen, H. X., Long, T. N., Nguyen, H. V., Nguyen, H. X., Le, Q. V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparison+of+transoral+thyroidectomy+vestibular+approach+and+unilateral+axillobreast+approach+for+endoscopic+thyroidectomy:+A+prospective+cohort+study.">Comparison of transoral thyroidectomy vestibular approach and unilateral axillobreast approach for endoscopic thyroidectomy: A prospective cohort study.</a> Journal of Laparoendoscopic and Advanced Surgical Techniques. 31 (1), 11-17 (2020).</li><li>Bhattacharyya, N. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Surgical+treatment+of+cervical+nodal+metastases+in+patients+with+papillary+thyroid+carcinoma.">Surgical treatment of cervical nodal metastases in patients with papillary thyroid carcinoma.</a> Archives of Otolaryngology - Head and Neck Surgery. 129 (10), 1101-1104 (2003).</li><li>Lundgren, C. I., Hall, P., Dickman, P. W., Zedenius, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Clinically+significant+prognostic+factors+for+differentiated+thyroid+carcinoma:+A+population-based,+nested+case-control+study.">Clinically significant prognostic factors for differentiated thyroid carcinoma: A population-based, nested case-control study.</a> Cancer. 106 (3), 524-531 (2006).</li></ol>

TOETVA is characterized by the full exposure and dissection of the central lymph nodes, which is significantly advantageous in the treatment of differentiated thyroid carcinoma with cN1a10,13,14,15. However, it should be noted that due to the limited operating space, it is relatively difficult to deal with the big tumors located in the upper pole of the thyroid gland. The surgical indications a...

Conventional open thyroidectomy has been safely performed using a cervical incision for more than 100 years1. Although most patients have efficient scar healing and the cosmetic effect is generally acceptable, a permanent scar on the neck always draws immediate attention from common observers2. Nearly 20% of post-thyroidectomy patients experience self-awareness, and more than 10% consider further treatments to remove the scar3. Moreover, a negative impact of the cervical incision on health-related quality of life (HRQOL) has also been reported4. Varied remote-access approaches for thyroid surgery, such as axillobreast, transaxillary, retroauricular, and subclavian approaches, have been developed to avoid a visible neck scar5,6,7,8 by moving the cutaneous incision to less conspicuous locations.9 However, these approaches require wide-flap dissection to access the thyroid gland and still leave cutaneous scars at the incision sites10.
Since 2008, techniques for natural orifice transluminal endoscopic surgery for transoral thyroid surgery have been developed. These can be performed via the oral vestibular approach or the sublingual approach. The former is more popular because it is associated with fewer complications. In 2016, Anuwong published the first case series of 60 patients undergoing the transoral endoscopic thyroidectomy vestibular approach (TOETVA) and identified an excellent prognosis11. In comparison with the remote-access methods, TOETVA is considered truly minimally invasive because the area of the flap dissection is similar to conventional open thyroidectomy, and it does not leave any scars on the body10.
TOETVA, a revolutionary endoscopic method, meets women&#39;s cosmetic needs and allows easy access to the bilateral thyroid and central compartment12. It is distinguished by the complete exposure and dissection of the central lymph nodes, which is beneficial in treating differentiated thyroid cancer with cN1a10,13,14,15. However, because of the limited operating space, dealing with large tumors in the upper pole of the thyroid gland is relatively challenging. The current study describes the step-by-step procedures of TOETVA.

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr>
			<td>Allis Grasping Forceps,310 mm x 5 mm</td>
			<td>AESCULAP</td>
			<td>PO111R</td>
			<td></td>
		</tr>
		<tr>
			<td>Button Electrode Tip</td>
			<td>AESCULAP</td>
			<td>GK385R</td>
			<td></td>
		</tr>
		<tr>
			<td>Ceramic Electrode</td>
			<td>AESCULAP</td>
			<td>GK384R</td>
			<td></td>
		</tr>
		<tr>
			<td>Complete Trocar</td>
			<td>AESCULAP</td>
			<td>EJ751R</td>
			<td></td>
		</tr>
		<tr>
			<td>Endoscope</td>
			<td>Olympus</td>
			<td>WA53005A</td>
			<td></td>
		</tr>
		<tr>
			<td>IONM</td>
			<td>Medtronic</td>
			<td>NIM-3.0</td>
			<td></td>
		</tr>
		<tr>
			<td>Light Transmitting Bundle</td>
			<td>Olympus</td>
			<td>WA03310A</td>
			<td></td>
		</tr>
		<tr>
			<td>Maryland Dissecting Forceps, 310 mm x 5 mm</td>
			<td>AESCULAP</td>
			<td>PO102R</td>
			<td></td>
		</tr>
		<tr>
			<td>Monopolar Handle (5 mm diameter, 33 cm working length)</td>
			<td>AESCULAP</td>
			<td>GK372R</td>
			<td></td>
		</tr>
		<tr>
			<td>Pneumoperitoneum tube,4 m</td>
			<td>STRYKE</td>
			<td>620-240-223</td>
			<td></td>
		</tr>
		<tr>
			<td>Pyramidal Tip Obturator</td>
			<td>AESCULAP</td>
			<td>EJ755R</td>
			<td></td>
		</tr>
		<tr>
			<td>Reusable Monopolar Cable</td>
			<td>AESCULAP</td>
			<td>GK245</td>
			<td></td>
		</tr>
		<tr>
			<td>Scissors</td>
			<td>AESCULAP</td>
			<td>P0004R</td>
			<td></td>
		</tr>
		<tr>
			<td>Suction irrigation tube</td>
			<td>AESCULAP</td>
			<td>PG027R</td>
			<td></td>
		</tr>
		<tr>
			<td>Super Righting Needle Holder, 5 mm</td>
			<td>AESCULAP</td>
			<td>PL414R</td>
			<td></td>
		</tr>
		<tr>
			<td>Veress</td>
			<td>TianSong</td>
			<td>E2014.6</td>
			<td></td>
		</tr>
	</tbody>
</table>

transoral endoscopic thyroidectomy vestibular approach for thyroid lobectomy

The manuscript describes the transoral endoscopic thyroidectomy vestibular approach (TOETVA) for thyroid lobectomy. The patient is placed in the supine position with extension and fixation of the neck. One 20 mm transverse incision and two 5 mm incisions are made through the mucosa of the oral vestibule for camera and instrument placement after disinfection of the skin and oral cavity. The workspace is established and maintained by the skin suspension device, which is made of unabsorbable string (3-0) and rubber bands, and the CO2 insufflation pressure. Lobectomy using a medial-to-lateral technique and prophylactic ipsilateral central neck dissection is performed simultaneously on patients with papillary thyroid cancer (PTC). The specimen is extracted through the 20 mm incision. The parathyroid gland is immediately searched for in the specimen and auto-transplanted to the left brachioradialis. A drainage tube is inserted through the retractor hole into the bed of the thyroid gland, and absorbable sutures are used to close the mucosal incisions in the oral vestibule and the linea alba cervicalis. Prophylactics administered intravenously are recommended for the first 24 h after surgery, and oral antibiotics are used for 7 days postoperatively.

We set up a routine clinical pathway for patients with TOETVA at the center. Laryngoscopy and a thyroid ultrasound are carried out on each patient before the operation. Parathyroid hormone (PTH), thyroid function, 25-dihydroxy vitamin D (25-OH-VD), and serum calcium are routinely measured before the operation, and all of them except for thyroid function are remeasured 1 day after the surgery. In our hospital, Foley catheters are routinely used for patients who will have a TOETVA surgery of more than 3 h. The Foley cathet...

Watch this Scientific Journal Video about Transoral Endoscopic Thyroidectomy Vestibular Approach for Thyroid Lobectomy at JoVE.com

Transoral Endoscopic Thyroidectomy Vestibular Approach for Thyroid Lobectomy

Here, we present a protocol to describe the methodology for the transoral endoscopic thyroidectomy vestibular approach in detail.

The manuscript describes the transoral endoscopic thyroidectomy vestibular approach (TOETVA) for thyroid lobectomy. The patient is placed in the supine ...

TOETVA has some drawbacks including a narrow operating area and a comparatively challenging external branch of the superior laryngeal nerve exposure. This protocol improves the application of TOETVA IN clinical practice and reduces the learning curve. TOETVA is characterized by the full exposure and dissection of the central lymph nodes which is significantly advantageous in the treatment of differentiated thyroid carcinoma with cN1A.After anesthetizing the patient using an ultrasonic scalpel make the working space and widen it to both sternocleidomastoid muscles laterally and along the subplatysmal plane to the sternal notch inferiorly. Divide the linea alba colli with an ultrasonic scalpel and separate part of the strap muscle from the thyroid gland. Then, using a 20 milliliter needle, pierce the skin at the level of the inferior corner of the thyroid cartilage and place a pull hook through the hole to grab the separated part of the strap muscle.Use the ultrasonic scalpel to separate the remaining part of the strap muscle and expose the common carotid artery. Find the vagus nerve and record the signal using intraoperative neuromonitoring. Next, hold the inferior margin of the isthmus using non-traumatic forceps.Then use an ultrasonic scalpel to cut the isthmus from the inferior portion of the cricoid cartilage and expose the trachea. For the lobectomy of the Transoral Endoscopic Thyroidectomy Vestibular Approach, or TOETVA, locate the trachea first and use it as a reference. Using non-traumatic forceps, hold the upper pole of the thyroid and divide the cricothyroid space with the ultrasonic scalpel.Transect part of the sternothyroid muscle to expose the upper pole of the thyroid. Sever the superior thyroid artery and vein to free the lateral glands from the top down. Lift the upper pole of the gland and find the recurrent laryngeal nerve or RLN under direct visualization.Next, separate the thyroid capsule from the trachea. Then divide the inferior thigh vessels and cut Berry's ligament with the ultrasonic scalpel. Remove the unilateral lobe of the thyroid gland from the trachea.After locating the inferior parathyroid gland, dissect the pretracheal and prelaryngeal lymph nodes using an ultrasonic scalpel. Cut the connective tissue in front of the carotid artery to determine the lateral boundary of the central lymph nodes. End the connective tissue in front of the trachea to determine the medial boundary of the central lymph nodes.Sweep the anterior side of the left RLN, or the anterior and posterior sides of the right RLN to complete the central lymph node dissection. Remove the specimens using endoscopic pouches. Wash the surgical wound repeatedly with warm, sterile distilled water.Place a surgical drain through a small skin puncture in the anterior neck. Reapproximate the strap muscles. Finally, close the oral wounds with 5-O absorbable sutures.Baseline characteristics and representative results of the 32 cases of TOETVA and the 97 cases of open surgery are shown here. The mean age, and gender composition of the patients differed between the two groups. Younger female patients choose the TOETVA method.The operation time of the TOETVA was longer than open surgery. No significant differences in the number of harvested lymph nodes were observed between the two groups. In terms of the metastatic lymph nodes, the ratio of extrathyroidal extension in tumor size differed between the two groups, meaning the characteristics of the tumors differed between the two groups.No significant differences in postoperative parathyroid hormone and postoperative calcium were found between the two groups. When the RLN is in the vicinity of a hemorrhage, using an electrotherm or an ultrasonic scalpel for hemostasis without figuring out the anatomy of the RLN and the surrounding conditions should be avoided.

transoral-endoscopic-thyroidectomy-vestibular-approach-for-thyroid

Research

JoVE Journal

Medicine

3.3K vues.  Sichuan University. TOETVA présente certains inconvénients, notamment une zone d’opération étroite et une branche externe relativement difficile de l’exposition supérieure du nerf laryngé. Ce protocole améliore l’application de la pratique clinique TOETVA IN et réduit la courbe d’apprentissage. TOETVA est caractérisé par l’exposition complète et le curage des ganglions lymphatiques centraux, ce qui est significativement avantageux dans le traitement du carcinome différencié de la thyroïde...