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Background: Total mesorectal resection (TME) has become the standard surgical procedure for resection of colorectal cancer tumors. We presented a systematic meta-analysis to evaluate the surgical outcomes of laparoscopic TME surgery with preservation or nonpreservation of both the superior rectum artery (SRA) and left colonic artery (LCA) for upper-rectal and sigmoid colon cancers. Methods: The comparative studies were systematically searched on PubMed, Science Direct, Web of Science, Wanfang Data, and China National Knowledge Infrastructure (CNKI) up to April 2021. Primary outcomes were oncology outcomes. And secondary outcomes involved surgical outcomes of interest and postoperative recovery. Results: Five relevant studies with a total of 761 patients undergoing laparoscopic TME surgery were eligible for meta-analysis. Three hundred seven patients received TME with preservation of both SRA and LCA (Group A), and 454 received TME surgery alone (Group B), respectively. Our results indicated that Group A had a less total postoperative complications (P = .000), lower anastomotic leakage rate (P = .002), shorter length of stay (P = .008), and longer operative time (P = .002). However, there was no significant difference between the two groups in terms of lymph node dissections (P = .188), intraoperative bleeding (P = .474), the first postoperative defecation (P = .943), recurrence rate (P = .547), and conversive rate (P = .504). Conclusions: Based on our meta-analysis, laparoscopic TME surgery with preservation of both the SRA and LCA for upper-rectal and sigmoid colon cancers may significantly receive better clinical and surgical outcomes. More well-designed large sample studies are required to replicate the short-term benefits and long-term oncologic outcomes. [ABSTRACT FROM AUTHOR]

Purpose: To achieve excellent postoperative bowel function in familial adenomatous polyposis (FAP) patients, it is important to reconstruct the digestive tract. The aim of this study is to preliminarily discuss the advantages of total proctocolectomy with straight ileoanal anastomosis (TPC-SIAA) plus pedicled omental transposition for FAP. Methods: A retrospective study was carried out in two hospitals analysing data for FAP patients who underwent surgical treatments between 2015 and 2021. Perioperative outcomes and early and mid-term anal functions were analysed. Results: After excluding 4 patients who underwent total proctocolectomy with permanent ileostomy, 10 patients were enrolled in the study. Among the 10 patients, 3 received TPC-SIAA plus pedicled omental transposition, 3 received total proctocolectomy with ileal pouch-anal anastomosis (TPC-IPAA), and 4 received total colectomy with ileal pouch-rectal anastomosis (TC-IPRA). Except for one case conversion to laparotomy, laparoscopic surgery was performed for the other cases. The incidence of early postoperative complications was apparently higher with pouch anastomosis (57.1%) than straight anastomosis (0%). Frequencies of bowel movement and low anterior resection syndrome (LARS) score were higher for TPC-SIAA than the other two surgical procedures in the early term; over time, however, the frequencies of bowel movement and LARS score both showed a decreasing trend. In addition, combined with anorectal pressure detection and magnetic resonance imaging defecography at the 3rd month after TPC-SIAA plus pedicled omental transposition, defecation coordination was good. The dynamics and receptivity of the new rectum tended to be as expected. Conclusion: Although the three surgical procedures are safe and feasible surgical options for FAP, TPC-SIAA plus pedicled omental transposition is more consistent with intestinal physiology, with good intestinal compliance, and anal function tended to be as expected over time. Nevertheless, more extensive studies are needed to confirm these benefits. [ABSTRACT FROM AUTHOR]

Background: The use of 3-dimensional (3D) endoscopic thyroidectomy (ET) has been increasing, but its feasibility and safety have not been well documented for thyroidectomy. Hence, to systematically investigate the comparative outcomes during 3D-ET and 2-dimensional (2D) ET for benign and malignant lesions, we conducted this meta-analysis. Methods: Based on the PRISMA guidelines, a systematic database search of the PubMed, Cochrane Library, Web of Science, China National Knowledge Infrastructure (CNKI), and Chinese Wanfang databases was performed. The eligible studies were published in English and Chinese up to October 2020. The major endpoints evaluated were procedure time, blood loss, postoperative drainage, postoperative hospitalization, postoperative complications, total number of lymph node dissections (LNDs), and total cost. Results: A total of 15 relevant studies including 1190 patients (583 for 3D-ET and 607 for 2D-ET) compared the application of 3D and 2D laparoscopic systems in thyroid surgery, of which 8 were endoscopic benign thyroidectomy (EBT) and 7 were endoscopic malignant thyroidectomy (EMT). Our meta-analysis indicated that 3D-ET generally had advantages over 2D-ET in terms of procedure time (P = 0.000), blood loss (P = 0.000), postoperative drainage (P = 0.000), postoperative complications (P = 0.000), and LNDs (P = 0.006). However, there were no significant differences between the two systems in terms of total cost (P = 0.245) or postoperative hospitalization (P = 0.068). Subgroup analysis showed consistency of the overall outcomes in each subset, but a shorter postoperative hospitalization in 3D-EBT was revealed. Conclusions: Compared to 2D-ET, 3D endoscopic thyroidectomy is an efficient, safe, and reliable method with better depth perception and stereoscopic vision, and an equally satisfactory outcome. More clinical RCTs with long-term follow-up are required to reproduce these promising results. [ABSTRACT FROM AUTHOR]

Background: Three-dimensional (3D) laparoscopy has the advantages and characteristics of more radical procedures in the treatment of gastric cancer. The objective of this research was to investigate the short-term efficacy and safety of 3D laparoscopic procedures in the treatment of advanced distal gastric cancer. Methods: We retrospectively analyzed the clinical data of 124 patients treated with 3D and two-dimensional (2D) laparoscopic D2 lymphadenectomy for distal gastric cancer at the China Academy of Medical Sciences Cancer Hospital and the Affiliated Cancer Hospital of Guangxi Medical University from January 2014 to January 2015. The effects on operative time, bleeding, hospitalization time, complications, and the number of lymph nodes removed were analyzed. Results: The difference between the general data of the two groups was not statistically significant (P.0.05). In analysis of the subgroups, the number of lymph nodes removed in the 3D laparoscopic group was significantly higher than in the 2D laparoscopic group ([2.52±1.88] vs [2.22±1.80], P=0.001; [2.22±1.80] vs [1.47±1.99], P=0.019). However, the differences among the total number of lymph nodes removed, operative time, intraoperative blood loss, intraoperative complications, postoperative complications, postoperative recovery time, and postoperative hospital stay were not statistically significant. Conclusion: 3D laparoscopic-assisted radical gastrectomy for distal advanced gastric cancer is safe and feasible. [ABSTRACT FROM AUTHOR]