The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Zhen Wang - One of the best experts on this subject based on the ideXlab platform.
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modified submucosal tunneling endoscopic resection for submucosal tumors in the esophagus and Gastric Fundus near the cardia
Endoscopy, 2017Co-Authors: Qiang Zhang, Li Xiang, Zhen WangAbstract:Background and study aims Submucosal tunneling endoscopic resection with double opening (DO-STER) was developed by our group for the resection of submucosal tumors in the esophagus and Gastric Fundus near the cardia. This study aimed to provide a preliminary evaluation of feasibility and safety of DO-STER. Methods The key to DO-STER is the creation of a tunnel opening in the mucosa over the inferior border of the tumor. During resection, the tumor can be gradually pushed out of the submucosal tunnel through the opening, leaving enough space for operation within the tunnel. A total of 10 tumors resected by DO-STER were retrospectively reviewed. Results All tumors were successfully resected by DO-STER. One tumor was located at the lower esophagus, four at the esophagoGastric junction, and five at the Gastric Fundus near the cardia. Tumor size ranged from 1.0 × 1.2 cm to 3.5 × 5.0 cm, and all tumors originated from the muscularis propria. Operative times ranged from 45 to 150 minutes. No delayed bleeding or perforation occurred. Conclusion DO-STER seems to provide an alternative approach for resection of tumors in the esophagus and Gastric Fundus near the cardia.
Qiang Zhang - One of the best experts on this subject based on the ideXlab platform.
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modified submucosal tunneling endoscopic resection for submucosal tumors in the esophagus and Gastric Fundus near the cardia
Endoscopy, 2017Co-Authors: Qiang Zhang, Li Xiang, Zhen WangAbstract:Background and study aims Submucosal tunneling endoscopic resection with double opening (DO-STER) was developed by our group for the resection of submucosal tumors in the esophagus and Gastric Fundus near the cardia. This study aimed to provide a preliminary evaluation of feasibility and safety of DO-STER. Methods The key to DO-STER is the creation of a tunnel opening in the mucosa over the inferior border of the tumor. During resection, the tumor can be gradually pushed out of the submucosal tunnel through the opening, leaving enough space for operation within the tunnel. A total of 10 tumors resected by DO-STER were retrospectively reviewed. Results All tumors were successfully resected by DO-STER. One tumor was located at the lower esophagus, four at the esophagoGastric junction, and five at the Gastric Fundus near the cardia. Tumor size ranged from 1.0 × 1.2 cm to 3.5 × 5.0 cm, and all tumors originated from the muscularis propria. Operative times ranged from 45 to 150 minutes. No delayed bleeding or perforation occurred. Conclusion DO-STER seems to provide an alternative approach for resection of tumors in the esophagus and Gastric Fundus near the cardia.
Li Xiang - One of the best experts on this subject based on the ideXlab platform.
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modified submucosal tunneling endoscopic resection for submucosal tumors in the esophagus and Gastric Fundus near the cardia
Endoscopy, 2017Co-Authors: Qiang Zhang, Li Xiang, Zhen WangAbstract:Background and study aims Submucosal tunneling endoscopic resection with double opening (DO-STER) was developed by our group for the resection of submucosal tumors in the esophagus and Gastric Fundus near the cardia. This study aimed to provide a preliminary evaluation of feasibility and safety of DO-STER. Methods The key to DO-STER is the creation of a tunnel opening in the mucosa over the inferior border of the tumor. During resection, the tumor can be gradually pushed out of the submucosal tunnel through the opening, leaving enough space for operation within the tunnel. A total of 10 tumors resected by DO-STER were retrospectively reviewed. Results All tumors were successfully resected by DO-STER. One tumor was located at the lower esophagus, four at the esophagoGastric junction, and five at the Gastric Fundus near the cardia. Tumor size ranged from 1.0 × 1.2 cm to 3.5 × 5.0 cm, and all tumors originated from the muscularis propria. Operative times ranged from 45 to 150 minutes. No delayed bleeding or perforation occurred. Conclusion DO-STER seems to provide an alternative approach for resection of tumors in the esophagus and Gastric Fundus near the cardia.
Yanan Wang - One of the best experts on this subject based on the ideXlab platform.
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transcardiac tunneling technique for endoscopic submucosal dissection of Gastric Fundus tumors arising from the muscularis propria
Endoscopy, 2014Co-Authors: Minhua Zheng, Taotao Jiao, Yanan WangAbstract:The promising endoscopic resection techniques for upper gastrointestinal submucosal tumors (SMTs) are challenged when performed in the Gastric Fundus. Here, we report on the development of a transcardiac endoscopic tunneling technique (TCTT) for the resection of tumors in this area. A total of 18 patients with Gastric Fundus SMTs arising from the muscularis propria on endoscopic ultrasound underwent TCTT. The procedure involved the excavation of a submucosal tunnel from the esophagus, through the cardia, to the Gastric SMT for resection. The tunnel was closed by clips after retrieval of the tumor. The mean tumor size was 2.1 cm (range 0.8 – 5.0 cm). The mean procedure time was 75.1 minutes (range 40 – 100 minutes). Complete resection was achieved in all cases. Iatrogenic perforation occurred in one case. This and one other patient developed mild pneumoperitoneum on the day after the procedure; symptoms resolved under conservative management. No patient developed gastrointestinal leakage, delayed bleeding, or secondary infection. Therefore, in this pilot study, TCTT provided a definitive histological diagnosis as well as a feasible, safe, and easy therapeutic approach for Gastric Fundus SMTs arising from muscularis propria in the circular area within 8 cm below the cardia.
Dan-lei Chen - One of the best experts on this subject based on the ideXlab platform.
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Extraluminal laparoscopic wedge-resection of submucosal tumors on the posterior wall of the Gastric Fundus close to the esophagocardiac junction.
Journal of Laparoendoscopic & Advanced Surgical Techniques, 2009Co-Authors: Dan-lei Chen, Jing-li Cai, Cheng-zhu ZhengAbstract:Abstract Purpose: Laparoscopic resection of submucosal tumors in the Gastric Fundus, especially in the posterior wall near the esophagocardiac junction (ECJ), is difficult and time consuming and is and likely to cause esophageal stenosis and splenic injury. In this article, we report an extraluminal laparoscopic wedge-resection (ELWR) that minimizes these problems. Methods: Thirty-seven patients with submucosal tumors in the posterior wall of the Gastric Fundus received ELWR. The operation consisted of four steps: 1) localization of the tumor, 2) dissection of the omentum, 3) mobilization of the Gastric Fundus/upper pole of the spleen and exposure of the ECJ, and 4) resection of the Gastric Fundus with a linear endoscopic gastrointestinal anastomosis stapler. Results: None of the cases needed conversion to open surgery. Mean postoperative hospital stay was 5.5 ± 1.0 days. The distance between the tumor and the incision margin ranged from 0.7 to 2.5 cm toward the ECJ. Pathologic examination revealed 7 case...
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Laparoscopic resection of submucosal tumors in Gastric Fundus
Chinese journal of surgery, 2008Co-Authors: Jing-li Cai, Dan-lei ChenAbstract:Objective To investigate the feasibility and safety of extraluminal laparoscopic wedge resection(ELWR)in treating submucosal tumors in the Gastric Fundus.Methods Clinical data of 84 patients underwent ELWR for submucosal tumors in the Gastric Fundus between September 2000 and December 2006 were reviewed and analyzed retrospectively.The four-portal operation procedures were carried out as follows:localization of the tumor.dissection of the omentum.mobilization of the Gastric Fundus and the upper polar of spleen,exposure of ECJ,and resection of the Gastric Fundus with Endo GIA.Results The patients included 53 males and 31 females,age ranged from 32 to 78 years(mean,59 years).The mean tumor diameter was (4.2±1.3)cm.The distance from the tumor edge to the ECJ was 1.1-3.0 cm.The operations were successful in all the 84 patients,with a mean operation time of(62.6±8.9)min and mean operative blood 1088 of(86.2±8.1)ml.No apparent tumor focus was left.No operation was convened to open surgery,and no significant postoperative complications occurred.The mean post-operative hospital stay wag(5.6±0.5)days.The gastrointestinal function recovered within 36 h after operation in 66 cases (78.6%),and the patients returned to normal activity and restored oral feeding.The distance between the tumor and the resection margin was 0.7-2.5 cm from the ECJ[mean,(1.4±0.5)cm],and 2.5-6.0 cm from the other three sides[mean,(4.1±1.0)cm].Of the 84 cases,29 cases were diagnosed with leiomyoma,51 cases different types of stromal tumor and 4 cages neurofibroma.The mean follow-up duration was(51.0±4.3)months,no recurrence or metastasis was found in the mean time.Conclusions ELWR is a safe,simple and beneficial procedure for submucosal tumors in the Gastric Fundus,especially in the posterior wall near the ECJ.It avoids intraperitoneal infection,possible splenic injury and postoperative esophageal stenosis.In addition.the resection scope is not limited. Key words: Stomach neoplasms; Laparoscopy; Gastrectomy; Submucosal tunlor of Gastric Fundus
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Laparoscopic resection of submucosal tumor on posterior wall of Gastric Fundus
World Journal of Gastroenterology, 2004Co-Authors: Zhong-wei Ke, Cheng-zhu Zheng, Ming-gen Hu, Dan-lei ChenAbstract:AIM: Laparoscopic resection of tumors on the posterior wall of Gastric Fundus, especially when they are next to the esophagocardiac junction (ECJ), is both difficult and time-consuming. Furthermore, it can lead to inadvertent esophagus stenosis and injury to the spleen. In order to overcome these difficulties, laparoscopically extraluminal resection of Gastric Fundus was designed to manage submucosal tumors located on the posterior wall of Gastric Fundus and next to ECJ. METHODS: From January 2001 to September 2003, laparoscopically extraluminal resection of Gastric Fundus was successfully carried out on 15 patients. There were 11 males and 4 females with an average age of 58 years (range, 38 to 78 years). The mean diameter of the tumors was 4.8 cm. The distance of the tumor border from ECJ was about 1.5-2.5 cm. The four-portal operation procedures were as follows: localization of the tumor, dissection of the omentum, mobilization of the Gastric Fundus and the upper polar of spleen, exposure of ECJ, and resection of the Gastric Fundus with Endo GIA. RESULTS: The laparoscopic operation time averaged (66.2 ± 10.4) min, the average amount of bleeding was (89.4 ± 21.7) mL. The mean post-operative hospital stay was (5.3 ± 1.1) d. Within 36 h post-operation, 73.3% of all the patients recovered their gastrointestinal function and began to eat something and to walk. In all the operations, no apparent tumor focus was left and no complication or conversion to open surgery occurred. CONCLUSION: Our newly designed procedure, laparoscopically extraluminal resection of the Gastric Fundus, can avoid contamination of the abdominal cavity, injury to the spleen and esophageal stenosis. The procedure seems to be both safe and effective.
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Laparoscopic resection of submucosal tumor on posterior wall of Gastric Fundus
World Journal of Gastroenterology, 2004Co-Authors: Zhong-wei Ke, Cheng-zhu Zheng, Ming-gen Hu, Dan-lei ChenAbstract:AIM: Laparoscopic resection of tumors on the posterior wall of Gastric Fundus, especially when they are next to the esophagocardiac junction (ECJ), is both difficult and time-consuming. Furthermore, it can lead to inadvertent esophagus stenosis and injury to the spleen. In order to overcome these difficulties, laparoscopically extraluminal resection of Gastric Fundus was designed to manage submucosal tumors located on the posterior wall of Gastric Fundus and next to ECJ. METHODS: From January 2001 to September 2003, laparoscopically extraluminal resection of Gastric Fundus was successfully carried out on 15 patients. There were 11 males and 4 females with an average age of 58 years (range, 38 to 78 years). The mean diameter of the tumors was 4.8 cm. The distance of the tumor border from ECJ was about 1.5-2.5 cm. The four-portal operation procedures were as follows: localization of the tumor, dissection of the omentum, mobilization of the Gastric Fundus and the upper polar of spleen, exposure of ECJ, and resection of the Gastric Fundus with Endo GIA. RESULTS: The laparoscopic operation time averaged (66.2 ± 10.4) min, the average amount of bleeding was (89.4 ± 21.7) mL. The mean post-operative hospital stay was (5.3 ± 1.1) d. Within 36 h post-operation, 73.3% of all the patients recovered their gastrointestinal function and began to eat something and to walk. In all the operations, no apparent tumor focus was left and no complication or conversion to open surgery occurred. CONCLUSION: Our newly designed procedure, laparoscopically extraluminal resection of the Gastric Fundus, can avoid contamination of the abdominal cavity, injury to the spleen and esophageal stenosis. The procedure seems to be both safe and effective.
