Long-term oncological outcomes of low anterior resection for rectal cancer with and without preservation of the left colic artery: a retrospective cohort study

Abstract Background There is uncertainty in the literature about preserving the left colic artery (LCA) during low anterior resection for rectal cancer. We analyzed the effect of preserving the LCA on long-term oncological outcomes. Methods We retrospectively collected clinicopathological and follow-up details of patients who underwent low anterior resection for rectal cancer in the General Surgery Department of Guangdong Provincial People’s Hospital, from January 2014 to December 2015. Cases were divided into low ligation (LL), LCA preserved, or high ligation (HL), LCA not preserved, of the inferior mesenteric artery. The 5-year overall survival (OS) and disease-free survival (DFS) rates were compared between the two groups. Results Altogether, there were 221 and 295 cases in the LL group and HL groups, respectively. Operating time in the LL group was significantly longer than in the HL group (224.7 vs. 211.7 min, p = 0.039). Postoperative 30-day mortality, early complications including anastomotic leakage showed no significant differences between the LL and HL groups (postoperative 30-day mortality, 0.9% LL, 1.4% HL, p = 0.884; early complications, 41.2% LL, 38.3% HL, p = 0.509; anastomotic leakage 8.6% LL, 13.2% HL, p = 0.100). The median follow-up periods were 51.4 (7–61) months in the LL group and 51.2 (8–61) months in the HL group. During follow-up, the percentages of patients who died, had local recurrence, or had metastases were 39.8, 7.7, and 38.5%, respectively, in the LL group and 39, 8.5, and 40%, respectively, in the HL group; these differences were not significant (all p > 0.05). The 5-year OS and DFS were 69.6 and 59.6% in the LL group, respectively, and 69.1 and 56.2% in the HL group, respectively; these differences were not significant (all p > 0.05). After stratification by tumor-node-metastasis stage, the difference between the 5-year OS and DFS for stages I, II, and III cancer were not significant (all p > 0.05). Conclusions The long-term oncological outcomes of LL group are comparable with HL group. LL cannot be supported due to the absence of lower complication rates and the longer operating times.

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Long-term oncological outcomes of low anterior resection for rectal cancer with and without preservation of the left colic artery: A retrospective cohort study.

10.21203/rs.3.rs-54678/v2 ◽

2020 ◽

Author(s):

Yuwen Luo ◽

Rongjiang Li ◽

Deqing Wu ◽

Jun Zeng ◽

Junjiang Wang ◽

...

Keyword(s):

Rectal Cancer ◽

Anterior Resection ◽

Low Anterior Resection ◽

Disease Free Survival ◽

Colic Artery ◽

Left Colic Artery ◽

Oncological Outcomes ◽

Tumor Node Metastasis Stage

Abstract BackgroundThere is uncertainty in the literature about the best surgical approach for low anterior resection of rectal cancer to deal with the inferior mesenteric artery (IMA), that is to preserve left colic artery or not. We analyzed the effect of preserving the left colic artery (LCA) on long-term oncological outcomes. MethodsWe retrospectively collected clinicopathological and follow-up details of patients who underwent low anterior resection for rectal cancer in the General Surgery Department of Guangdong Provincial People's Hospital, from January 2014 to December 2015. Cases were divided into low ligation (LL) or high ligation (HL) of the IMA The 5-year overall survival (OS) and disease-free survival (DFS) rates were compared between the two groups. ResultsAltogether, there were 221 cases in the LL group (LCA preserved) and 295 cases in the HL group (LCA not preserved). Postoperative 30-day mortality was 0.9% in the LL group and 1.4% in the HL group. Early complications occurred in 41.2% patients in the LL group and 38.3% in the HL group. Anastomotic leakage occurred in 8.6% of patients in the LL group and in 13.2% in the HL group. The numbers of lymph nodes harvested were 18.8 ± 9.6 in the LL group and 17.0 ± 6.6 in the HL group. The median follow-up periods were 51.4 (7–61) months in the LL group and 51.2 (8–61) months in the HL group. During follow-up, the percentages of patients who died, had local recurrence, or had metastases were 39.8%, 7.7%, and 38.5%, respectively, in the LL group and 39%, 8.5%, and 40%, respectively, in the HL group; these differences were not significant (all P ＞ 0.05). The 5-year OS and DFS were 69.6% and 59.6% in the LL group, respectively, and 60.1% and 56.2% in the HL group, respectively; these differences were not significant (all P ＞ 0.05). After stratification by tumor-node-metastasis stage, the difference between the 5-year OS and DFS for stages I, II, and III cancer were not significant (all P ＞ 0.05). ConclusionsThe long-term oncological outcomes of low anterior resection for rectal cancer with preservation of the LCA are comparable with those of ligation at the IMA origin.

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Long-term oncologic outcomes of laparoscopic low anterior resection of rectal cancer with preservation of the left colic artery

10.21203/rs.3.rs-54678/v1 ◽

2020 ◽

Author(s):

Yuwen Luo ◽

Rongjiang Li ◽

Deqing Wu ◽

Jun Zeng ◽

Junjiang Wang ◽

...

Keyword(s):

Rectal Cancer ◽

Anterior Resection ◽

Low Anterior Resection ◽

Oncologic Outcomes ◽

Colic Artery ◽

Left Colic Artery ◽

Laparoscopic Low Anterior Resection ◽

The Difference

Abstract Aim To analyze the effect of preserving the left colic artery (LCA) on long-term oncologic outcomes during laparoscopic low anterior resection of rectal cancer. Methods Clinicopathological and follow-up patients undergoing laparoscopic low anterior resection of rectal cancer in general surgery department of Guangdong Provincial People's Hospital from January 2014 to December 2015 were retrospectively collected. According to the difference surgical methods of inferior mesenteric artery (IMA), 159 cases were divided into the LCA preservation group and 225 cases in the LCA non-preservation group. The 5-year rates of overall survival (OS) and disease-free survival (DFS) were compared between two group. Results 384 patients were included in final analysis. Anastomotic leakage occurred in 7 patients (4.4%) in the LCA preservation group and in 16 patients (7.1%) in the LCA non-preservation group. The follow-up rate was 91.2% (145/159) during 5–60 months in LCA preservation group, and 89.8% (202/225) during 5–60 months in the LCA non-preservation group. The number of patients who developed death, local recurrence and metastasis were 59 (37.1%), 13 (8.2%) and 60 (37.7%) in the LCA preservation group, and 86 (38.2%), 20 (8.9%) and 92 (40.9%) in the LCA non-preservation group, without significant differences (all P ༞ 0.05). The 5-year OS and DFS rates were 69.0% and 59.3% in the LCA preservation group, and 68.8% and 55.9% in the LCA non-preservation group, without significant differences (all P ༞ 0.05). After stratification by TNM Stage, the difference on 5-year OS rates and DFS rates of I stage, II stage and III stage in two groups were no significant as well (all P ༞ 0.05). Conclusions The long-term oncologic outcomes of laparoscopic low anterior resection of rectal cancer with preservation of the LCA are comparable with ligation at origin of IMA.

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High Risk of Low Anterior Resection Syndrome in Long-term Follow-up after Anastomotic Leakage in Anterior Resection for Rectal Cancer

Diseases of the Colon & Rectum ◽

10.1097/dcr.0000000000002334 ◽

2021 ◽

Vol Publish Ahead of Print ◽

Author(s):

Henrik Jutesten ◽

Pamela Buchwald ◽

Eva Angenete ◽

Martin Rutegård ◽

Marie-Louise Lydrup

Keyword(s):

Rectal Cancer ◽

High Risk ◽

Anastomotic Leakage ◽

Anterior Resection ◽

Low Anterior Resection ◽

Low Anterior Resection Syndrome ◽

Anterior Resection Syndrome ◽

Long Term Follow Up

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Preserving left colic artery in anterior resection reduce the incidence of anastomotic leakage in rectal cancer patients: A prospective cohort study

10.21203/rs.3.rs-16171/v1 ◽

2020 ◽

Author(s):

Huichao Zheng ◽

Jingwang Ye ◽

Yue Tian ◽

Yong Zhang ◽

Haode Shen ◽

...

Keyword(s):

Rectal Cancer ◽

Anastomotic Leakage ◽

Computer Tomography ◽

Anterior Resection ◽

Three Dimensional ◽

Colic Artery ◽

Early Complications ◽

Left Colic Artery ◽

Tomography Reconstruction ◽

Lca Group

Abstract Background Whether or not to preserving left colic artery(LCA) in anterior resection for rectal cancer and its effect on anastomotic leakage are remains controversial. The aim of this study was to investigate the clinical outcomes of preserving the LCA during anterior resection for rectal cancer. We further explored branching types of the inferior mesenteric artery(IMA) based on the three-dimensional computed tomography reconstruction images. Methods Between January 2017 and October 2019, patients who underwent anterior resection for rectal cancer were allocated to preservation LCA or non-preservation LCA. Evaluation parameters including intraoperative conditions, pathological outcomes, postoperative complications, and short-term results. Furthermore, preoperative three-dimensional computer tomography reconstruction were performed to assess types of IMA. Results 160 patients with rectal cancer were enrolled in this study, 56 were arranged to preservation LCA and 104 to non-preservation LCA. The incidence of anastomotic leakage and overall early complications were significantly(P<0.05) decreased in the preservation LCA group. The reoperation rate of the preservation LCA group (1.8%) was lower than that of the non-preservation LCA group (10.6%), but the difference was not statistically significant (P>0.05). The two groups did not significantly(P>0.05) differ in blood loss, intraoperative complications, total number of harvested lymph nodes, and number of positive lymph nodes. The three-dimensional computer tomography reconstruction images of 108 patients with rectal cancer were evaluated, the IMA was divided into four types, of which 53(49.1%) were type I, 24 (22.2%) were type II, 18 (16.7%) were type III, and 13 (12%) were type IV. Conclusions The preservation of LCA in anterior resection for rectal cancer could help reducing the incidence of anastomotic leakage, overall early complications and without increasing other known risks. The three-dimensional computer tomography reconstruction technique was useful for evaluating the IMA types to facilitate make intraoperative surgical decisions and preservation of LCA during rectal cancer surgery.

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Defunctioning stoma and short- and long-term outcomes after low anterior resection for rectal cancer—a nationwide register–based cohort study

International Journal of Colorectal Disease ◽

10.1007/s00384-021-03877-y ◽

2021 ◽

Author(s):

Soran Gadan ◽

Judith S. Brand ◽

Martin Rutegård ◽

Peter Matthiessen

Keyword(s):

Rectal Cancer ◽

Anterior Resection ◽

Low Anterior Resection ◽

Long Term Outcomes ◽

Defunctioning Stoma ◽

Oncological Outcomes ◽

All Cause Mortality ◽

Short And Long Term

Abstract Purpose A defunctioning stoma reduces the risk of symptomatic anastomotic leakage after low anterior resection for rectal cancer and mitigates the consequences when a leakage occurs, but the impact on mortality and oncological outcomes is unclear. The aim was to investigate the associations of a defunctioning stoma with short- and long-term outcomes in patients undergoing low anterior resection for rectal cancer. Methods Data from all patients who underwent curative low anterior resection for rectal cancer between 1995 and 2010 were obtained from the Swedish Colorectal Cancer Register. A total of 4130 patients, including 2563 with and 1567 without a defunctioning stoma, were studied. Flexible parametric models were used to estimate hazard ratios for all-cause mortality, 5-year local recurrence, and distant metastatic disease in relation to the use of defunctioning stoma, adjusting for confounding factors and accounting for potential time-dependent effects. Results During a median follow-up of 8.3 years, a total of 2169 patients died. In multivariable analysis, a relative reduction in mortality was observed up to 6 months after surgery (hazard ratio = 0.82: 95% CI 0.67–0.99), but not thereafter. After 5 years of follow-up, 4.2% (173/4130) of the patients had a local recurrence registered and 17.9% (741/4130) had developed distant metastatic disease, without difference between patients with and without defunctioning stoma. Conclusion A defunctioning stoma is associated with a short-term reduction in all-cause mortality in patients undergoing low anterior resection for rectal cancer without any difference in long-term mortality and oncological outcomes, and should be considered as standard of care.

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Long term outcome of anastomotic leakage in patients undergoing low anterior resection for rectal cancer

BMC Cancer ◽

10.1186/s12885-020-07109-4 ◽

2020 ◽

Vol 20 (1) ◽

Author(s):

Alice Artus ◽

Nicolas Tabchouri ◽

Othman Iskander ◽

Nicolas Michot ◽

Olivier Muller ◽

...

Keyword(s):

Rectal Cancer ◽

Anastomotic Leakage ◽

Anterior Resection ◽

Low Anterior Resection ◽

Term Outcome ◽

Long Term Outcome

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Risk factors of symptomatic anastomotic leakage and its impacts on a long-term survival after laparoscopic low anterior resection for rectal cancer: a retrospective single-center study

World Journal of Surgical Oncology ◽

10.1186/s12957-021-02303-5 ◽

2021 ◽

Vol 19 (1) ◽

Author(s):

Xinyu Qi ◽

Maoxing Liu ◽

Kai Xu ◽

Pin Gao ◽

Fei Tan ◽

...

Keyword(s):

Risk Factors ◽

Rectal Cancer ◽

Anastomotic Leakage ◽

Anterior Resection ◽

Low Anterior Resection ◽

Term Survival ◽

Long Term Survival ◽

Prolonged Duration ◽

Duration Of Operation

Abstract Background Postoperative symptomatic anastomotic leakage (AL) is a serious complication after low anterior resection (LAR) for rectal cancer. AL can potentially affect short-term patient outcomes and long-term prognosis. This study aimed to explore the risk factors and long-term survival of symptomatic AL after laparoscopic LAR for rectal cancer. Methods From May 2009 to May 2015, 298 consecutive patients who underwent laparoscopic LAR for rectal cancer with or without a defunctioning stoma were included in this study. Univariate and multivariate logistic regression analyses were used to explore independent risk factors for symptomatic AL. Survival analysis was performed using Kaplan–Meier curves, and log-rank tests were used for group comparisons. Results Among the 298 patients enrolled in this study, symptomatic AL occurred in eight (2.7%) patients. The univariate analysis showed that age of ≤65 years (P = 0.048), neoadjuvant therapy (P = 0.095), distance from the anal verge (P = 0.078), duration of operation (P = 0.001), and pathological tumor (T) category (P = 0.004) were associated with symptomatic AL. The multivariate analysis demonstrated that prolonged duration of operation (P = 0.010) was an independent risk factor for symptomatic AL after laparoscopic LAR for rectal cancer. No statistically significant differences were observed in the 3-year (P = 0.785) and 5-year (P = 0.979) overall survival rates. Conclusions A prolonged duration of operation increased the risk of symptomatic AL after laparoscopic LAR for rectal cancer. An impact of symptomatic AL on a long-term survival was not observed in this study; however, further studies are required. Trial registration This study was registered in the Chinese Clinical Trial Registry (ChiCTR2000033413) on May 31, 2020.

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IMARI: multi-Interventional program for prevention and early Management of Anastomotic leakage after low anterior resection in Rectal cancer patIents: rationale and study protocol

BMC Surgery ◽

10.1186/s12893-020-00890-w ◽

2020 ◽

Vol 20 (1) ◽

Author(s):

M. D. Slooter ◽

◽

K. Talboom ◽

S. Sharabiany ◽

C. P. M. van Helsdingen ◽

...

Keyword(s):

Rectal Cancer ◽

Early Detection ◽

Anastomotic Leakage ◽

Anterior Resection ◽

Low Anterior Resection ◽

Active Management ◽

Fluorescence Angiography ◽

Early Management ◽

One Year

Abstract Background Anastomotic leakage (AL) is still a common and feared complication after low anterior resection (LAR) for rectal cancer. The multifactorial pathophysiology of AL and lack of standardised treatment options requires a multi-modal approach to improve long-term anastomotic integrity. The objective of the IMARI-trial is to determine whether the one-year anastomotic integrity rate in patients undergoing LAR for rectal cancer can be improved using a multi-interventional program. Methods IMARI is a multicentre prospective clinical effectiveness trial, whereby current local practice (control cohort) will be evaluated, and subsequently compared to results after implementation of the multi-interventional program (intervention cohort). Patients undergoing LAR for rectal cancer will be included. The multi-interventional program includes three preventive interventions (mechanical bowel preparation with oral antibiotics, tailored full splenic flexure mobilization and intraoperative fluorescence angiography using indocyanine green) combined with a standardised pathway for early detection and active management of AL. The primary outcome is anastomotic integrity, confirmed by CT-scan at one year postoperatively. Secondary outcomes include incidence of AL, protocol compliance and association with AL, temporary and permanent stoma rate, reintervention rate, quality of life and functional outcome. Microbiome analysis will be conducted to investigate the role of the rectal microbiome in AL. In a Dutch nationwide study, the AL rate was 20%, with anastomotic integrity of 90% after one year. Based on an expected reduction of AL due to the preventive approaches of 50%, and increase of anastomotic integrity by a standardised pathway for early detection and active management of AL, we hypothesised that the anastomotic integrity rate will increase from 90 to 97% at one year. An improvement of 7% in anastomotic integrity at one year was considered clinically relevant. A total number of 488 patients (244 per cohort) are needed to detect this difference, with 80% statistical power. Discussion The IMARI-trial is designed to evaluate whether a multi-interventional program can improve long-term anastomotic integrity after rectal cancer surgery. The uniqueness of IMARI lies in the multi-modal design that addresses the multifactorial pathophysiology for prevention, and a standardised pathway for early detection and active treatment of AL. Trial registration Trialregister.nl (NL8261), January 2020.

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