Laparoscopic Proctectomy Research Articles

Laparoscopic Proctectomy, Ileoanal Pouch Creation, and Transanal Transection With Single-Stapled Anastomosis for Ulcerative Colitis.

Laparoscopic Proctectomy, Ileoanal Pouch Creation, and Transanal Transection With Single-Stapled Anastomosis for Ulcerative Colitis.

Ten steps for ileoanal pouch anastomosis.

Appropriate patient selection, surgical technique, and follow-up pathways can provide optimal functional outcomes and good quality of life in many patients undergoing ileoanal pouch surgery. The aim of this study was to demonstrate the standardised approach to ileoanal pouch formation that we have developed in our pouch surgery centre. We developed a structured approach to laparoscopic proctectomy with ileoanal pouch anastomosis formation, divided into 10 different steps. All patients referred to our centre from January 2020 to December 2022 for ulcerative colitis were included in the study. A total of 38 consecutive patients underwent ileal pouch-anal anastomosis (IPAA) surgery. All procedures were completed laparoscopically with one conversion to open (2.6%). A total of 13 patients had postoperative complications within 30 days of surgery (34.2%), with six (15.8%) being Clavien Dindo class 3 or higher. Median follow-up length was 18 months (range 2-30). Median number of bowel movements in 24 h at 12 months post-surgery was 4 (range 1-11). Our modular 10 steps approach could provide a standardised framework to surgeons in the learning curve. IPAA is a complex surgical procedure with significant postoperative morbidity. Our stepwise approach resulted in a high rate of minimally invasive surgery and could facilitate introduction of the technique.

Robotic versus laparoscopic proctectomy: a comparative study of short-term economic and clinical outcomes

BackgroundAlthough several studies compare the clinical outcomes and costs of laparoscopic and robotic proctectomy, most of them reflect the outcomes of the utilisation of older generation robotic platforms. The aim of this study is to compare the financial and clinical outcomes of robotic and laparoscopic proctectomy within a public healthcare system, utilising a multi-quadrant platform.MethodsConsecutive patients undergoing laparoscopic and robotic proctectomy between January 2017 and June 2020 in a public quaternary centre were included. Demographic characteristics, baseline clinical, tumour and operative variables, perioperative, histopathological outcomes and costs were compared between the laparoscopic and robotic groups. Simple linear regression and generalised linear model analyses with gamma distribution and log-link function were used to determine the impact of the surgical approach on overall costs.ResultsDuring the study period, 113 patients underwent minimally invasive proctectomy. Of these, 81 (71.7%) underwent a robotic proctectomy. A robotic approach was associated with a lower conversion rate (2.5% versus 21.8%;P = 0.002) at the expense of longer operating times (284 ± 83.4 versus 243 ± 89.8 min;P = 0.025). Regarding financial outcomes, robotic surgery was associated with increased theatre costs (A$23,019 ± 8235 versus A$15,525 ± 6382; P < 0.001) and overall costs (A$34,350 ± 14,770 versus A$26,083 ± 12,647; P = 0.003). Hospitalisation costs were similar between both approaches. An ASA ≥ 3, non-metastatic disease, low rectal cancer, neoadjuvant therapy, non-restorative resection, extended resection, and a robotic approach were identified as drivers of overall costs in the univariate analysis. However, after performing a multivariate analysis, a robotic approach was not identified as an independent driver of overall costs during the inpatient episode (P = 0.1).ConclusionRobotic proctectomy was associated with increased theatre costs but not with increased overall inpatient costs within a public healthcare setting. Conversion was less common for robotic proctectomy at the expense of increased operating time. Larger studies will be needed to confirm these findings and examine the cost-effectiveness of robotic proctectomy to further justify its penetration in the public healthcare system.

Assessment of Risk Factors for Iatrogenic Genitourinary Injuries During a Proctectomy.

It is critical to avoid iatrogenic injuries affecting genitourinary organs in order to prevent postoperative urinary or sexual dysfunction, which lead to lengthier recovery and possibly reoperation. Using the 2016-2019 American College of Surgeons National Quality Improvement Program (ACS NSQIP) Targeted Proctectomy Database, we collated 2577 patients with non-metastatic rectal cancer who underwent a laparoscopic or open proctectomy. Univariate analysis was used to identify differences in perioperative factors and genitourinary injuries (GUIs) between operative approaches, and multivariate logistic regression was used to identify independent risk factors for sustaining an intraoperative GUI. The rates of preoperative comorbidities were significantly higher among patients who received an open operation. The proportion of GUIs was also significantly higher in this patient population. Multivariate logistic regression demonstrated that patients who underwent a laparoscopic proctectomy were associated with a 51.4% lower risk of sustaining a GUI. Furthermore, >10% body weight loss in the past 6 months and ASA class 3 status were independently associated with a higher risk of GUI regardless of operation type. Patients who undergo a laparoscopic proctectomy are associated with a lower risk of GUI. On the other hand, patients with >10% body weight loss and ASA class 3: Severe Systemic Disease were associated with a higher risk of GUI.

Robotic-Assisted versus Laparoscopic Proctectomy with Ileal Pouch-Anal Anastomosis for Ulcerative Colitis: An Analysis of Clinical and Financial Outcomes from a Tertiary Referral Center.

Robotic-assisted colorectal surgery is gaining popularity, but limited data are available on the safety, efficacy, and cost of robotic-assisted restorative proctectomy with the construction of an ileal pouch and ileal pouch-anal anastomosis (IPAA) for ulcerative colitis (UC). A retrospective study was conducted comparing consecutively performed robotic-assisted and laparoscopic proctectomy with IPAA between 1 January 2016 and 31 September 2021. In total, 67 adult patients with medically refractory UC without proven dysplasia or carcinoma underwent surgery: 29 operated robotically and 38 laparoscopically. There were no differences between both groups regarding postoperative complications within 30 days according to Clavien-Dindo classification' grades 1-5 (51.7% vs. 42.1%, p = 0.468) and severe grades 3b-5 (17.2% vs. 10.5%, p = 0.485). Robotic-assisted surgery was associated with an increased urinary tract infection rate (n = 7, 24.1% vs. n = 1, 2.6%; p = 0.010) and longer operative time (346 ± 65 min vs. 281 ± 66 min; p &lt; 0.0001). Surgery costs were higher when operated robotically (median EUR 10.377 [IQR EUR 4.727] vs. median EUR 6.689 [IQR EUR 3.170]; p &lt; 0.0001), resulting in reduced total inpatient profits (median EUR 110 [IQR EUR 4.971] vs. median EUR 2.853 [IQR EUR 5.386]; p = 0.001). Robotic-assisted proctectomy with IPAA can be performed with comparable short-term clinical outcomes to laparoscopy but is associated with a longer duration of surgery and higher surgery costs. As experience increases, some advantages may become evident regarding operative time, postoperative recovery, and length of stay. The robotic procedure might then become cost-efficient.

Laparoscopic natural orifice specimen extraction, a minimally invasive surgical technique for mid-rectal cancers: Retrospective single-center analysis and single-surgeon experience of selected patients.

To evaluate the feasibility, safety, and short-term outcomes of middle rectal resection followed by transanal specimen extraction. Forty-four patients with small mid-rectal tumors underwent laparoscopic rectal resection followed by transanal specimen extraction. The procedure was successful in all patients without intraoperative conversion or additional access. The mean operation time was 182.7 minutes (range, 130-255 minutes), the mean blood loss was 26.5 mL (range, 5-120 mL), the mean postoperative exhaust time was 31.3 hours (range, 16-60 hours), and the mean length of hospital stay was 9.5 days (range, 8-19 days). One patient developed anastomotic leakage, which was treated by intravenous antibiotics and daily pelvic cavity flushes through the abdominal drainage tube. No infection-related complications or anal incontinence were observed. The mean tumor size was 2.1 cm (range, 1.6-3.2 cm), the mean number of harvested lymph nodes was 16.5 (range, 6-31), and the mean follow-up time was 8.5 months (range, 2-16 months). By the last follow-up, no signs of recurrence had been found in any patient. The combination of standard laparoscopic proctectomy and transanal specimen extraction could become a well-established strategy for selected patients.

Assessing the role of robotic proctectomy in obese patients: a contemporary NSQIP analysis

Robotic proctectomy has become increasingly popular for both benign and malignant indications. The purpose of this study was to determine if the robotic approach has a distinct advantage over laparoscopy in obese patients, which has been suggested by previous subgroup analyses. We performed a retrospective review of 2016–2018 National Surgery Quality Improvement Program (NSQIP) data to compare outcomes between patients who underwent robotic versus laparoscopic proctectomy, stratified by Body Mass Index (BMI) subgroups. We also compared outcomes of converted minimally invasive proctectomy to planned open operations. Four thousand four hundred eighteen (69.3%) patients underwent laparoscopic proctectomy, and 1956 (30.7%) patients underwent robotic proctectomy. Robotic proctectomy was associated with a significantly lower conversion rate compared to laparoscopic proctectomy (5.1% vs 12.3%; p = 0.002), and this relationship was maintained on an adjusted model. Obese (BMI > 30) patients were more likely to require conversion in both laparoscopic and robotic groups with the greatest difference in the conversion rate in the obese subgroup. Patients who underwent conversion had higher composite morbidity compared to patients who underwent planned open operations (50.8% vs 41.3%; p < 0.001). And among patients with rectal cancer, robotic proctectomy was associated with a greater incidence of positive radial tumor margins compared to laparoscopic proctectomy (8.0% vs 6.4%; p = 0.039), driven primarily by the obese subgroup. Our study demonstrates that robotic proctectomy is associated with a 7% lower conversion rate compared to laparoscopy and that obese patients are more likely to require conversion than non-obese patients. Among obese patients with rectal cancer, we identified an increased risk of positive radial margins with robotic compared to laparoscopic proctectomy.

Laparoscopic Proctectomy in Locally Advance Rectal Cancer: Prolapse Delayed Anastomosis Compared to Immediate Anastomosis

Laparoscopic Proctectomy in Locally Advance Rectal Cancer: Prolapse Delayed Anastomosis Compared to Immediate Anastomosis

Laparoscopic proctectomy and J-pouch reconstruction with trans anal mini-invasive approach for ulcerative colitis

Laparoscopic proctectomy and J-pouch reconstruction with trans anal mini-invasive approach for ulcerative colitis

Early experience with simultaneous double equipe laparoscopic proctectomy and J-pouch reconstruction with trans anal mini-invasive approach for ulcerative colitis

Early experience with simultaneous double equipe laparoscopic proctectomy and J-pouch reconstruction with trans anal mini-invasive approach for ulcerative colitis

Surgical coaching applied to laparoscopic TME for continuous professional development in rectal surgery: proof of concept.

Coaching is maturing as a strategy for surgeons' continuous professional development in different types of surgery. Laparoscopic total mesorectal excision (LAP TME) is one of the recognized difficult procedures in colorectal surgery. Aim of this trial is to introduce the surgical coaching as a tool for a continuous technical education of LAP TME for cancer in a consultant surgeon carrier. Twelve Italian colorectal surgeons were enrolled as trainees in the AIMS Academy rectal cancer surgical coaching project and attended a face-to-face 90-min surgical coaching on a pre-edited 45-min-long video of a laparoscopic proctectomy according to pre-determined guidelines. At the end of the coaching, all mentors were asked to fill a questionnaire evaluating the trainee's skills. All trainees had to fill a post-coaching questionnaire addressing the appropriateness of the coaching with respect to their actual level. Trainees were more confident in performing the extra-pelvic part of the surgical procedures compared to the intra-pelvic dissection. The most challenging steps according to the trainees were the seminal vesicles identification and the pelvic floor dissection. Mentors found the trainees quite confident in the approach to the vascular structures, lymphadenectomy, stapler utilization and bleeding control. The sharpness and the efficacy of the dissection, the dissection of the surgical planes and the anastomosis fashioning were reported at a lower level of confidence. The higher grade of satisfaction reported by the trainee came from the attention that the mentors demonstrated towards them, from the availability of the mentors to take into consideration the surgical issues raised and from the willingness to apply the suggestions received during their next proctectomies. The surgical coaching applied to LAP TME should be considered as an innovative tool for continuous professional development.

Transanal total mesorectal excision outcomes for advanced rectal cancer in a complex surgical population.

Total mesorectal excision (TME) is the gold standard for oncologic resection in low and mid rectal cancers. However, abdominal approaches to TME can be hampered by poor visibility, inadequate retraction, and distal margin delineation. Transanal TME (taTME) is a promising hybrid technique that was developed to mitigate the difficulties of operating in the low pelvis and to optimize the circumferential resection and distal margins. The objective of this study was to characterize our experience implementing taTME at our institution in a technically challenging patient population. We performed a retrospective review of consecutive patients who underwent taTMEs between November 2013 and May 2019 for rectal cancer at a tertiary community cancer center. Outcome measures included pathologic grading of TME specimen, post-operative complications, and oncologic outcomes. Forty-four patients with mid and low rectal cancer underwent low anterior resection via taTME. The most common staging modality was rectal MRI which demonstrated T3 or T4 tumors in 89% of our patients prior to neoadjuvant. Eighty-six percent of patients underwent neoadjuvant chemoradiation. The initial cases were performed sequentially as a single team, but we later transitioned to a synchronous, two-team approach. Ninety-one percent of TME grades were complete or near complete. Only one patient (2.3%) had a positive circumferential margin. Six patients developed anastomotic leaks with an overall anastomotic complication rate of 18.2%. Two patients (4.5%) with primary rectal cancer developed local recurrence, one of which developed multifocal local recurrence. Using the taTME approach on selected locally advanced low rectal cancers, especially in technically complex irradiated and obese male patients, has yielded comparably safe and effective outcomes to laparoscopic proctectomy.

Early Patient Discharge in Selected Patients is Not Associated With Higher Readmission After Major Abdominal Operations.

Our objective was to examine the associations between early discharge and readmission after major abdominal operations. Advances in patient care resulted in earlier patient discharge after complex abdominal operations. Whether early discharge is associated with patient readmissions remains controversial. Patients who had colorectal, liver, and pancreas operations abstracted in 2011-2017 American College of Surgeons National Surgical Quality Improvement Program Participant Use Data Files were included. Patient readmission was stratified by 6 operative groups. Patients who were discharged before median discharge date within each operative group were categorized as an early discharge. Analyses tested associations between early discharge and likelihood of 30-day postoperative unplanned readmission. A total of 364,609 patients with major abdominal operations were included. Individual patient groups and corresponding median day of discharge were: laparoscopic colectomy (n = 152,575; median = 4), open colectomy (n =137,462; median = 7), laparoscopic proctectomy (n = 12,238; median = 5), open proctectomy (n = 24,925; median = 6), major hepatectomy (n = 9,805; median = 6), pancreatoduodenectomy (n = 27,604; median = 8). Early discharge was not associated with an increase in proportion of readmissions in any operative group. Early discharge was associated with a decrease in average proportion of patient readmissions compared to patients discharged on median date in each of the operative groups: laparoscopic colectomy 6% versus 8%, open colectomy 11% versus 14%, laparoscopic proctectomy 13% versus 16%, open proctectomy 13% vs 17%, major hepatectomy 8% versus 12%, pancreatoduodenectomy 16% versus 20% (all P ≤ 0.02). Serious morbidity composite was significantly lower in patients who were discharged early than those who were not in each operative group (all P < 0.001). Early discharge in selected patients after major abdominal operations is associated with lower, and not higher, rate of 30-day unplanned readmission.

Laparoscopic Versus Robotic Proctectomy Outcomes: An ACS-NSQIP Analysis

BackgroundThe robotic platform is increasingly used in colorectal surgery. Recent upgrades in the robotic platform and introduction of proctectomy-specific reports from the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) warrant updated evaluation of minimally invasive proctectomy outcomes. The aim of this study was to compare outcomes in robotic versus laparoscopic proctectomy using ACS-NSQIP data. Materials and methodsThe ACS-NSQIP data set was used to identify adult patients undergoing elective robotic and laparoscopic proctectomy in 2016 and 2017. Demographics, preoperative and intraoperative data, and postoperative outcomes were collected. Propensity-weighted analysis was used to estimate the effect of robotic versus laparoscopic surgery on outcomes. ResultsOf 3845 patients meeting inclusion criteria, 2681 (70%) underwent a laparoscopic approach and 1164 (30%) underwent a robotic approach. Patients undergoing a robotic procedure were more likely to be older, have higher American Society of Anesthesiologists scores, low rectal tumors, and have undergone chemotherapy or radiation before surgery. After propensity adjustment, a robotic approach was associated with a decrease in conversion to open operation (estimated mean difference, −6.7%; P < 0.01), length of stay (−0.6 d; P = 0.01), occurrence of postoperative ileus (−3.7%; P = 0.01), and an increase in operative time (20.3 min; P < 0.01). ConclusionsUsing data from a national cohort, we found that compared with laparoscopy, robotic proctectomy is associated with decreased conversion to open operation, longer operation time, decreased length of stay, and decreased postoperative ileus. Our study identified several advantages to a robotic approach; however, further work is needed to assess cost-effectiveness in conjunction with clinical outcomes.

Institutional Outcomes Should Be a Determinant in Decision to Perform Laparoscopic Proctectomies for Rectal Cancer.

PurposeMinimally invasive rectal cancer (RC) resection has become common, despite recent high-profile trials failing to show non-inferiority to open proctectomy. We hypothesized that at a high-volume center, laparoscopic resection may have superior outcomes compared to those seen in ALaCaRT and ACOSOG Z6051.MethodsRetrospective review of patients undergoing laparoscopic proctectomy from 2007 to 2015 for RC was performed at a high-volume center. Primary outcome was successful resection defined by negative circumferential resection margin (CRM) and distal margin (DM), and complete total mesorectal excision (TME).ResultsA total of 89 patients were included. Of 33 patients with TME grading, 31 (93.9%) had complete/near complete TME, and 29 (87.9%) had a “successful resection” compared with 81.7% in ACOSOG and 82% in ALaCART trials using same criteria. CRM was ≥1 mm in 87 (97.8%) of patients. Mean DM was 3.8 cm; 97.8% of patients had negative DM.ConclusionHigh-volume centers can achieve similar high quality RC outcomes to those demonstrated in recent trials. Institutional outcomes should determine optimal surgical technique.

Fertility and Sexual Function in Women Following Pediatric Ileal Pouch-Anal Anastomosis

PurposeIleal Pouch-Anal Anastomosis (IPAA) is the standard of care for children requiring surgical treatment of severe colitis or polyposis syndromes. This study aims is to investigate the sexual function and fertility in women after undergoing childhood IPAA. MethodsA prospectively maintained colon and rectal database of consenting patients was queried from January 1980 to October 2015. We included all females that replied to at least 1 survey between the ages of 20 and 45 years that had undergone IPAA younger than 20 years of age. ResultsTwo hundred females met inclusion criteria, whereas 149 women replied to the sexual function questions. Ulcerative colitis was diagnosed in 122 (83%) patients, with the remainder having polyposis. Seven patients had a laparoscopic proctectomy. Only 2 patients had a pelvic infection, whereas 21 had intestinal obstruction postoperatively. A severely restricted sex life was reported in 6 (5%) patients. Of the 93 (62%) women who attempted pregnancy, 68 (73%) became pregnant. Median age of pregnancy and IPAA was 34 (range 22–45) and 17 years (range 9–20), respectively. Medical intervention to assist fertilization was required in 14/68. A total of 29 women reported problems during pregnancy with 58/68 (88%) giving birth to a live baby. Elective termination was reported in 2/68 surveys. Vaginal delivery occurred in 26/58 mothers with 27/58 planned and 9/58 unplanned cesarean sections. Age at IPAA, diagnosis, procedure type, pelvic infection, and obstruction were not associated with decreased fertility. All 7 patients operated laparoscopically have become pregnant. Change in pouch function after delivery was reported in 20/68 (32%, 5 missing) surveys. Conclusions73% of women who desired children become pregnant, and 88% had a successful delivery after pediatric IPAA. Only 5% reported severely restricted sexual function. Changes in pouch function occurred with pregnancy and persisted in 1/3 after delivery. Minimally invasive techniques may improve fertility rates but equire continued follow-up. Level of evidenceLevel IV. Type of studyObservational study.

Pelvic dimensions on preoperative imaging can identify poor-quality resections after laparoscopic low anterior resection for mid- and low rectal cancer.

High-quality surgery is essential for optimal oncologic outcomes in rectal cancer, but total mesorectal excision (TME) can be difficult for mid- and low rectal cancers. Preoperative identification of patients at risk for difficult TME may change the operative approach. The objective of this study was to determine if MRI pelvimetry can predict poor-quality surgery in patients undergoing laparoscopic low anterior resection (LAR) for mid- and low rectal cancer. All patients undergoing laparoscopic LAR for rectal cancer ≤ 9 cm from the anal verge at a single tertiary care referral center from 2011 to 2017 were retrospectively reviewed. Pelvic dimensions were measured from preoperative staging MRI on sagittal and axial views. Pelvimetry variables were all dichotomized based on median values. Exploratory factor analysis then identified the most relevant variables for regression analysis. The primary outcome was poor-quality resection, defined as an incomplete mesorectal grade, or involved circumferential (CRM) or distal (DRM) resection margins. There were 92 patients included in this study, of which 70% were male, the mean BMI was 26.0kg/m2, and the mean tumor height was 6.6cm. Preoperative (chemo)radiotherapy was administered in 70%, and the pathologic T-stage was T3/T4 in 41%. The overall incidence of poor-quality resection was 17%, including 13% incomplete TME, 7% involved CRM, and 1% involved DRM. Factor analysis identified S1-pubic symphysis and the angle between S1 and S5-bottom of symphysis (angle ABD) as relevant variables. After adjusting for pathologic T-stage, BMI, and tumor height, a S1-S5-bottom of symphysis angle > 74.3° (OR 6.19, 95% CI 1.18-32.37) independently predicted poor-quality resection. MRI pelvimetry can identify patients at risk for a poor-quality resection after laparoscopic proctectomy for mid- and low rectal cancer. These patients may benefit from the selective use of more advanced access methods to improve surgical resection quality.

B-Shaped Laparoscopic Dual Anastomosis for Mid-Low Rectal Cancer: A Safe and Feasible Technique.

Aims: To assess the feasibility, safety, 1-year postoperative quality of life, and 2-year postoperative local recurrence of b-shaped laparoscopic dual anastomosis (bSLDA) technique in laparoscopic anterior resection (LAR) for mid-low rectal cancer. Methods: In this case-matched study, we retrospectively reviewed the database of 120 patients with mid-low rectal cancer who underwent LAR in Tangdu hospital between June 2014 and January 2017. The database included baseline characteristics, operative data and short-term outcomes, specimen, and pathological results. Among all the participants, 60 patients underwent bSLDA and 60 patients underwent conventional laparoscopic dual anastomosis (CLDA). After lymph node dissection and rectal dissociation, patients in the bSLDA group received the operation as follows: (1) the rectum distal end was closed vertically instead of horizontally; (2) the anastomosis was conducted in an end-lower corner of rectal stump. We also performed at least 2 years of follow-up (the median follow-up was 36 months, ranging from 24 to 54 months), including 2-year recurrence scores, 1-year low anterior resection syndrome (LARS) scores, and QLQ-C30 scores. Results: In this case-matched study, there were no differences between bSLDA group and CLDA group in operative data and short-term outcomes, which suggested that bSLDA and CLDA were equally safe. Furthermore, compared with CLDA group, bSLDA group had no statistical difference in the rate of anastomotic leakage (AL), but there was a trend that the rate in bSLDA was lower. In postoperative specimen data, the maximum and minimum edge distances of the ring from the rectal stump are longer in the bSLDA group. What is more, in the EORTC QLQ-C30 (version 3.0), the diarrhea score in bSLDA group was statistically lower (better) than in CLDA group (P = .043). Although bSLDA group had no significant differences in the LARS scores with CLDA group, there was a trend that the LARS scores were lower in bSLDA. At last, the 2-year local recurrence rate in both groups was not significantly different. Conclusions: The bSLDA technique is safe and accessible, which may reduce the incidence of AL to some extent. Therefore, it could be an alternative to laparoscopic proctectomy for mid-low rectal cancer and may also improve postoperative quality of life for many patients.

Application value of the clearance of No.253 lymph nodes with priority to fascial space and preserving left colic artery in laparoscopic radical proctectomy

To investigate the application value of the clearance of No.253 lymph nodes with priority to fascial space and preserving left colic artery (LCA) in patients undergoing laparoscopic radical proctectomy. From August 2015 to August 2016, 97 consecutive middle-low rectal cancer patients underwent laparoscopic radical proctectomy using the clearance of No.253 lymph nodes with priority to fascial space and preserving LCA at Department of General Surgery, Tangdu Hospital. Among 97 patients, 45 were females , 52 were males, mean age was (64.3±5.5) years and mean BMI was (22.4±1.8) kg/m2. Brief steps of this clearance: traditional medial approach was the commencement of the dissection at the membrane bridge line in front of iliac vascular bifurcation, then entering into the Toldt's space; superior rectal artery served as the top of the tent and the Toldt's space was extended as far as possible; blunt separation was developed caudally (reaching 2 cm below the sacral promontory), cephalad (reaching the lower part of the pancreas), left laterally (reaching Toldt's line), dextrally (reaching abdominal aorta); after giving priority to fascias space, from the root of inferior mesenteric artery, LCA was exposed and No.253 lymph nodes were dissected. This regimen was suitable for the rectal adenocarcinoma patients without distant metastasis. There was no tension in the intestine and mesenteria after anastomosis in all the 97 patients. One patient received LCA ligation during the clearance, because of thinner LCA resulting in bleeding. The other 96 cases completed the clearance and operation successfully. The mean No.253 lymphadenectomy time was 11-27(17.1±5.3) minutes. The mean number of harvested No.253 lymph node was 0-6(4±2). The No.253 lymph nodes of 6 patients were positive. No.253 regional mesentery was complete in 95 patients. The total harvested number of lymph node was 11-26(17.3±5.3). Six patients with positive lymph nodes aged from 68 to 72 years old and all of them underwent TME operation 6-8 weeks after neoadjuvant chemoradiotherapy. The mean operative time was 89-189(125±35) minutes. The mean estimated blood loss was 10.5-38.6(22.4±10.5) ml. The first exhaust time was 3.0-6.0(5.6±2.1) days. The mean time to extracting the drainage tube was 3.0-5.0(4.5±2.5) days. Anastomotic fistula appeared in 1 case and hemorrhage appeared in 1 case, and these 2 cases were cured by conservative treatment. No perioperative death occurred. The mean postoperative hospital stay was 3.0-10.0(3.6±2.6) days. The clearance of No.253 lymph nodes with priority to fascial space and preserving LCA in laparoscopic radical proctectomy is safe and feasible.

P429 Robotic-assisted vs. laparoscopic proctectomy for inflammatory bowel disease: Results of the case-match comparison in single institution

P429 Robotic-assisted vs. laparoscopic proctectomy for inflammatory bowel disease: Results of the case-match comparison in single institution