Non-exposure Simple Suturing Endoscopic Full-thickness Resection with Sentinel Basin Dissection in Patients with Early Gastric Cancer: the SENORITA 3 Pilot Study
	    		
		   		
		   			
		   		
	    	
    	- Author:
	        		
		        		
		        		
			        		Bang Wool EOM
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Chan Gyoo KIM
			        		
			        		;
		        		
		        		
		        		
			        		Myeong-Cherl KOOK
			        		
			        		;
		        		
		        		
		        		
			        		Hong Man YOON
			        		
			        		;
		        		
		        		
		        		
			        		Keun Won RYU
			        		
			        		;
		        		
		        		
		        		
			        		Young-Woo KIM
			        		
			        		;
		        		
		        		
		        		
			        		Ji Yoon RHO
			        		
			        		;
		        		
		        		
		        		
			        		Young-Il KIM
			        		
			        		;
		        		
		        		
		        		
			        		Jong Yeul LEE
			        		
			        		;
		        		
		        		
		        		
			        		Il Ju CHOI
			        		
			        		
		        		
		        		
		        		
			        		
			        		Author Information
			        		
 - Publication Type:Original Article
 - From:Journal of Gastric Cancer 2020;20(3):245-255
 - CountryRepublic of Korea
 - Language:English
 - 
		        	Abstract:
			       	
			       		
				        
				        	 Purpose:Recently, non-exposure simple suturing endoscopic full-thickness resection (NESSEFTR) was developed to prevent tumor exposure to the peritoneal cavity. This study aimed to evaluate the feasibility of NESS-EFTR with sentinel basin dissection for early gastric cancer (EGC). 
				        	
Materials and Methods:This was the prospective SENORITA 3 pilot. From July 2017 to January 2018, 20 patients with EGC smaller than 3 cm without an absolute indication for endoscopic submucosal dissection were enrolled. The sentinel basin was detected using Tc 99m -phytate and indocyanine green, and the NESS-EFTR procedure was performed when all sentinel basin nodes were tumor-free on frozen pathologic examination. We evaluated the complete resection and intraoperative perforation rates as well as the incidence of postoperative complications.
Results:Among the 20 enrolled patients, one dropped out due to large tumor size, while another underwent conventional laparoscopic gastrectomy due to metastatic sentinel lymph nodes. All NESS-EFTR procedures were performed in 17 of the 18 other patients (94.4%) without conversion, and the complete resection rate was 83.3% (15/18). The intraoperative perforation rate was 27.8% (5/18), and endoscopic clipping or laparoscopic suturing or stapling was performed at the perforation site. There was one case of postoperative complications treated with endoscopic clipping; the others were discharged without any event.
Conclusions:NESS-EFTR with sentinel basin dissection is a technically challenging procedure that obtains safe margins, prevents intraoperative perforation, and may be a treatment option for EGC after additional experience. 
            