Laparoscopic Anterior Resection Research Articles

Short- and long-term outcomes of rectal cancer patients with high or improved low ligation of the inferior mesenteric artery

The ligation site of the inferior mesenteric artery (IMA) during laparoscopic radical resection for rectal cancer has been controversial. Consecutive patients (n = 205) with rectal cancer who underwent laparoscopic-assisted low anterior resection from January 2009 to December 2015 were retrospectively analyzed. The patients were divided into high ligation (n = 126) and improved low ligation groups (n = 79). A total of 205 rectal cancer patients underwent laparoscopic assisted anterior resection: 126 patients in the high ligation group and 79 patients in the improved low ligation group. The improved low ligation group was better than the high ligation group in terms of postoperative flatus time and postoperative defecation time. There were no differences between the groups in terms of blood loss, operation time, total number of lymph nodes, anastomotic leakage, postoperative time to first liquid diet and postoperative hospital stay. There were also no differences in 5-year overall survival (OS). Compared to high ligation, the improved low ligation ensures the extent of lymph node dissection, and promotes the early recovery of postoperative gastrointestinal function, but does not increase the operation time, bleeding risk, or anastomotic leakage. A ligation site of the IMA in laparoscopic rectal cancer surgery may not influence oncological outcomes.

What I Value in My Surgical Operative Notes as a Young GI Surgeon: An Operative Note of Laparoscopic Anterior Resection as an Example

What I Value in My Surgical Operative Notes as a Young GI Surgeon: An Operative Note of Laparoscopic Anterior Resection as an Example

Meta-analysis of laparoscopic anterior resection with natural orifice specimen extraction (NOSE-LAR) versus abdominal incision specimen extraction (AISE-LAR) for sigmoid or rectal tumors

BackgroundNatural orifice specimen extraction surgery is a novel technique of minimally invasive surgery. The purpose of this study was to compare the safety of laparoscopic anterior resection with natural orifice specimen extraction (NOSE-LAR) and abdominal incision specimen extraction (AISE-LAR) for sigmoid or rectum tumors.MethodsMEDLINE (PubMed), Embase, CENTRAL (Cochrane Central Register of Controlled Trials), Scopus, and ClinicalTrials databases were systematically searched for related articles up to August 2019. The primary outcomes included postoperative complications (overall postoperative complication, incision-related complication, anastomotic fistula, and severe complication) and pathologic results (lymph nodes harvested, proximal resection margin, and distal resection edge). The statistical analysis was performed on STATA 12.0 software.ResultsTen studies comprising 1787 patients were used for meta-analysis. Compared with AISE-LAR, NOSE-LAR had more advantages in terms of overall postoperative complication (odds ratio (OR) = 0.65 (95% CI, 0.46 to 0.90; P = 0.01)), incision-related complication (OR = 0.13 (95% CI, 0.05 to 0.35; P < 0.01)), distal resection edge (weighted mean difference (WMD) = 0.17 cm (95% CI, 0.02 to 0.33 cm; P = 0.02)), recovery of gastrointestinal function (WMD = − 0.38 day (95% CI, − 0.70 to − 0.06 day; P = 0.02 )), pain scores in postoperative day 1 (WMD = − 1.64 (95% CI, − 2.31 to − 0.98; P < 0.01)), additional analgesics usage (OR = 0.21 (95% CI, 0.11 to 0.40; P < 0.01)) and hospital stay (WMD = − 0.71 day (95% CI, − 1.10 to − 0.32 day; P < 0.01)), while the operation time of NOSE-LAR was prolonged (WMD = 7.4 min (95% CI, 0.17 to 14.64 min; P = 0.04)). The anastomotic fistula, severe complication, lymph nodes harvested, proximal resection margin, intraoperative blood loss, and long-term outcomes in NOSE-LAR were comparable with AISE-LAR.ConclusionsThe safety of NOSE-LAR was demonstrated, and it could be an alternative to conventional surgery in laparoscopic anterior resection for sigmoid and rectal tumors. However, further randomized and multi-center trials are required.

Effect comparison of three different types of transanal drainage tubes after anterior resection for rectal cancer

BackgroundAnastomotic leakage (AL) is one of the most severe early complications after rectal cancer surgery. Many studies and meta-analysis results show that the indentation of transanal drainage tubes (TDT) can prevent and reduce the incidence of AL. However, the size and material of drainage tubes are rarely reported. Herein, we compare the effect of three kinds of TDT and analyze the use of TDT material and size to prevent AL, which may better prevent the occurrence of AL.MethodsThe clinical data of 182 patients who underwent laparoscopic anterior resection of rectal cancer were retrospectively analyzed between January 2016 and March 2019. According to the types of indwelling TDT after the operation, they were divided into Fr32 silicone tubes (81 cases), Fr24 silicone tubes (54 cases), Fr24 latex tubes (47 cases). The first drainage, exhaust, defecation, abdominal distension and anastomotic leakage of the patients with three different types of TDT were compared.ResultsThere was no significant difference in the degree of first exhaust, abdominal distension and anastomotic leakage among three different types of TDT; the time of first drainage and defecation of the Fr32 silicone tube was significantly earlier than that of Fr24 silicone tube and Fr24 latex tube.ConclusionThe drainage effect of the Fr32 silicone tube is better than that of Fr24 silicone tube and Fr24 latex tube after anterior resection for rectal cancer, Fr32 silicone may better prevent the occurrence of AL, but randomized controlled studies are needed.

Laparoscopic anterior resection of mid-low rectal cancer with modified protective transverse colon stoma and subsequent subcutaneous and extraperitoneal intestinal reconstruction

目的： 评估改良的横结肠保护性造口+皮下腹腔外造口关闭在腹腔镜中低位直肠癌前切除术应用价值。 方法： 回顾性分析2016年1月至2019年2月间浙江大学金华医院结直肠肛门外科收治64例行腹腔镜中低位直肠癌切除切除术+改良的横结肠保护性造口+皮下腹腔外造口关闭患者的手术相关资料。 结果： 全组均顺利完成一期手术，无死亡病例。全组患者一期保护性造口的手术时间（26.3±10.4）min，造口相关出血量（5.2±4.2）ml，住院时间为（11.2±1.7）d、住院费用为（4.0±1.6）万元。一期手术相关并发症：吻合口漏12例（18.8%），患者均无广泛的腹膜刺激症状及严重全身毒性反应，无再次手术；吻合口狭窄4例（6.2%），2例经扩肛治疗痊愈，另2例出现直肠吻合口及上方肠管的严重肠管挛缩及狭窄并导致永久性横结肠造口；造口旁感染2例（3.1%），造口局部肠壁皮肤分离1例，造口皮疹3例（4.7%），无造口回缩及造口狭窄病例。全组64患者中除2例永久性造口外，另62例于术后1~6（3.4±2.6）个月二期局部麻醉下行皮下腹腔外造口关闭。二期手术时间（19.3±12.4）min，术中出血（2.6±3.9）ml，住院时间（5.6±2.1）d，住院费用（0.4±0.2）万元。二期手术并发症：结肠瘘口修补处漏2例（3.2%），切口感染2例（3.2%）。 结论： 改良的横结肠保护性造口及后续的皮下腹腔外造口关闭安全可行，对于伴随直肠吻合口漏高危因素的患者是一种可供选择的治疗措施。.

Lower bile duct metastasis from rectal cancer after surgery for liver metastasis and intrahepatic bile duct metastasis: a case report

BackgroundBiliary metastasis of colorectal cancer is a manifestation of metastatic liver carcinoma, and is often difficult to differentiate from cholangiocarcinoma. Further, lower bile duct metastasis of colorectal cancer is rare. We report the case of a 74-year-old woman who underwent pylorus-preserving pancreatoduodenectomy for lower bile duct metastasis of rectal cancer.Case presentationThe patient had undergone laparoscopic low anterior resection for rectal cancer (pT3N0M0 stage IIA) 6 years ago, laparoscopic anterior liver resection for liver metastasis (Couinaud segment V) 3 years ago, and left and caudal lobectomy with extrahepatic bile duct resection for left intrahepatic bile duct metastasis 6 months ago. A follow-up examination showed a 15 mm mass in the common bile duct, for which she underwent pylorus-preserving pancreatoduodenectomy. Histological and immunohistological examination of the specimens revealed similar cytokeratin (CK) expression patterns, which were negative for CK7 and positive for CK20. Therefore, the definitive diagnosis was metastasis from rectal cancer.ConclusionsIn summary, we encountered a case of lower bile duct metastasis from rectal cancer, which is often difficult to differentiate from cholangiocarcinoma. In such patients, CK7 and CK20 expression patterns are important in differentiating the two. The mechanism of metastasis in this case was considered to be through cancer cell implantation from lymphatic spread, or through distant metastasis of the primary cancer.

Transrectal Natural Orifice Specimen Extraction (NOSE) With Oncological Safety: A Prospective and Randomized Trial

BackgroundIn the present paper, we introduce our experience with the novel method during laparoscopic anterior resection of upper rectal or sigmoid colon cancer by transrectal natural orifice specimen extraction (NOSE). MethodsA prospective randomized controlled trial was performed from June 2016 to May 2019. Patients with upper rectal or sigmoid colon cancer were randomized in a 1:1 ratio to the NOSE group and the non-NOSE group. Preoperative and postoperative clinical variables were analyzed and compared between groups. Postoperative pain was analyzed utilizing a visual analog scale. Postoperative overall survival was analyzed using a Kaplan–Meier curve. ResultsA total of 276 patients were enrolled, of whom 254 were randomly divided into the NOSE group (n = 122) and the conventional laparoscopic group (n = 119). NOSE failed in 22 cases, which were converted to transabdominal specimen extraction. Intention-to-treat analysis was performed, and these 22 cases were included in the NOSE group. The incidence of postoperative complications was significantly lower in the NOSE group (11/122, 9%) than in the non-NOSE group (25/119, 21%). The NOSE group had a longer operation time, less blood loss, and a lower postoperative visual analog scale score than the non-NOSE group. The time for intestinal function recovery (ventilation) and the length of hospital stay were significantly longer in the non-NOSE group. The Kaplan–Meier survival curve showed no statistically significant difference in the disease-free survival rate between the NOSE group and the non-NOSE group. ConclusionsThe novel NOSE method is safe and feasible to use in patients having colorectal cancer. Compared with traditional laparoscopic surgery, the postoperative complication rates of NOSE surgery were lower with an improved short-term clinical recovery.

A Retrospective Study of Risk Factors for Symptomatic Anastomotic Leakage after Laparoscopic Anterior Resection of the Rectal Cancer without a Diverting Stoma.

Background Anastomotic leakage (AL) is a common and devastating postoperative issue for patients who have undergone anterior resection of rectal carcinoma and can lead to increased short-term morbidity and mortality. Moreover, it might be associated with a worse oncological prognosis of tumors. This study is aimed at exploring the risk factors for symptomatic AL after laparoscopic anterior resection (LAR) for rectal tumors without a preventive diverting stoma. Materials and Methods This case control study retrospectively reviewed the data of 496 consecutive patients who underwent LAR of the rectum without a preventive diverting stoma at the Cancer Hospital, Chinese Academy of Medical Sciences between September 2016 and September 2017. All patients were divided into an AL group and a control group based on the occurrence of postoperative symptomatic AL. Factors regarding patient-related variables, operation-related variables, and tumor-related variables were collected and assessed between the two groups through univariate and multivariate logistic regression analyses to identify independent risk factors for AL. Results In total, 18 (3.6%) patients developed postoperative symptomatic AL. Univariate analysis showed that a synchronous primary malignancy of the left hemicolon (P = 0.047), intraoperative chemotherapy (P = 0.003), and level of anastomosis (P = 0.033) were significantly related with AL. Multivariate analysis was subsequently performed to adjust for confounding biases and confirmed that a synchronous primary malignancy of the left hemicolon (odds ratio (OR), 12.225; 95% confidence interval (CI), 1.764-84.702; P = 0.011), intraoperative chemotherapy (OR, 3.931; 95% CI, 1.334-11.583; P = 0.013), and level of anastomosis (OR, 3.224; 95% CI, 1.124-9.249; P = 0.030) were independent risk factors for symptomatic AL for patients who received LAR for rectal neoplasms without a preventive diverting stoma. Conclusions Synchronous primary malignancy of the left hemicolon, intraoperative chemotherapy, and a low anastomotic level can increase the risks of postoperative symptomatic AL after LAR of the rectum without a protective diverting stoma.

Clinical efficacy and quality of life after transrectal natural orifice specimen extraction for the treatment of middle and upper rectal cancer.

Laparoscopic anterior resection with natural orifice specimen extraction (NOSE) avoids extra abdominal extraction incision during colorectal surgery. Some surgeons realized the benefits of NOSE on clinical efficacy. We compared the clinical efficacy of laparoscopic NOSE, laparoscopic non-NOSE and open surgery (OS) for short-term recovery and quality of life (QoL). A single randomized controlled trial of NOSE for middle and upper rectal cancer between April 2014 and February 2018. Preoperative and postoperative clinical variables were analyzed and compared between the groups. Preoperative and 6 months postoperative QoL was assessed with the SF-36 QoL questionnaire. A total of 378 patients were enrolled, 334 patients randomly divided into NOSE group (n=104), non-NOSE group (n=119), OS group (n=111). The NOSE group was superior to the other two groups on the QoL after surgery. The NOSE group had the lowest postoperative VAS score between three groups. The postoperative time for bowel function recovery and the length of hospital stay was statistically significantly different among the three groups, with the NOSE group having the shortest time. The incidence of postoperative complications was lower in the NOSE group (12/104, 11.5%) than in the non-NOSE group (20/119, 16.8%), the difference was statistically significant. The Kaplan-Meier (K-M) survival curve showed no statistically significant difference in the disease-free survival (DFS) rate between the three groups. Comparing NOSE to non-NOSE and OS, the NOSE had significantly better functional recovery and better QoL. The NOSE group had a significant lower surgical complication rate than the non-NOSE group.

Rectal disc resection improves stool frequency in patients with deep infiltrating endometriosis: A prospective study.

Gastrointestinal symptoms occur with deeply infiltrating endometriosis (DIE) of the rectum. To explore the medium-term gastrointestinal functional outcomes after rectal disc resection for endometriosis. All women undergoing laparoscopy for stage IV endometriosis at a tertiary referral hospital between November 2016 and January 2018 and had evidence of DIE of the rectum were included. Low anterior resection syndrome (LARS) score was measured using a validated questionnaire. Thirty-six women formed the cohort of the study. The mean age was 37years (range 20-72years). All women underwent a laparoscopic anterior rectal disc resection for DIE. The response rate was 100%. There was an increase in the percentage of patients having no LARS postoperatively compared to preoperatively (an increase of 78-83%). There was a reduction in LARS scores postoperatively observed in 18 patients (50%) and the prevalence of major LARS decreased postoperatively from 10% to 1%. Comparison of individual symptoms revealed a significant improvement in postoperative stool frequency scores (P=0.02). Multivariate analysis using logistic regression analysis demonstrated that reduction in postoperative stool frequency scores remained an independent factor (P=0.008). Rectal disc resection is feasible and safe, achieving observable improvements in stool frequency in patients with rectal DIE.

Mesorectal fat area and mesorectal area affect the surgical difficulty of robotic‐assisted mesorectal excision and intersphincteric resection respectively in different ways

Many studies have demonstrated predictors of the difficulty of laparoscopic anterior resection for rectal cancer. Few studies focus on the influence of pelvic dimensions on robotic-assisted mesorectal excision (ME) and intersphincteric resection (ISR). This study aimed to evaluate the influences of the mesorectal fat area (MFA) and mesorectal area on the difficulty of robotic sphincter-saving surgery. We included 156 patients with middle and low rectal cancer who underwent robotic sphincter-saving surgery. Clinical and anatomical factors, including the pelvic dimensions, were collected. Linear regression was performed for variables associated with surgical duration. We also performed subgroup analyses for robotic-assisted ME and ISR. Logistic regression was used to find variables associated with transanal dissection. For patients with middle or low rectal cancer, the sacral length and tumour distance from the anal verge were independently associated with surgical duration. The pT stage, sacral length and the MFA were independent predictors for the surgical duration of robotic-assisted ME. By contrast, a small mesorectal area was independently related to a longer duration of robotic-assisted ISR. The pelvic outlet length was independently associated with the use of transanal dissection for ISR. It is suggested that a large MFA could affect the difficulty of ME in robotic-assisted ME, while a small mesorectal area could increase the surgical difficulty of robotic-assisted ISR for low rectal cancer. Besides, the pelvic outlet length was associated with the use of transanal dissection. Further studies are needed to validate the results and draw more scientific conclusions.

Predictive Factors of Difficulty of Laparoscopic Management of Cancer Rectum

Abstract Background rectal cancers compromise approximately 25% of all primary colorectal cancers and follow a different natural disease course compared to colonic tumours, also it is well established that surgical approach, local recurrence rates and associated complications of rectal tumours are distinct from colonic ones. Purpose to use the previously mentioned factors that can influence the difficulty of performing laparoscopic anterior resection. And by using standardized operative time as an end point build reliable study models thys predicting operative difficulty for clinical use. Patients and Methods this is a prospective case series descriptive study analyzing the predictive factors of laparoscopic approach in surgical management of rectal carcinoma. Clinical records of listed patients that underwent laparoscopic anterior resection at Ain Shams University Hospitals were reviewed. Clinical records of listed patients that underwent laparoscopic anterior resection at Ain Shams University Hospitals from March 2018 to September 2018 were reviewed. Results some factors collected from the patients data as high BMI, old age, intraoperative blood loss and tumor staging may predict the difficulty of laparoscopic intervention for cancer rectum. Conclusion laparoscopic resection for low rectal cancers is a feasible technique and with proper training it can be performed safely with acceptable rates of overall morbidity and by taking into consideration the above mentioned factors that may predict the difficulty of Laparoscopic intervention in order to have the best outcome from the decision of Laparoscopic anterior resection for patients with cancer rectum.

High prevalence of asymptomatic internal hernias after laparoscopic anterior resection in a retrospective analysis of postoperative computed tomography.

Internal hernia (IH) after laparoscopic left-sided colorectal resection (small bowel herniating underneath the neo-descending colon) can be a potentially devastating complication, resulting in acute small bowel obstruction or ischemia. IH has been described as a rare occurrence in a few retrospective case series; however, patients undergoing laparoscopic resection seem to be more prone to this complication. We assessed the prevalence of IH in a large cohort of patients who had undergone laparoscopic left-sided colorectal resection for colon or rectal cancer (CRC). A database of consecutive patients at a single institution from 2012 to 2017 was reviewed. Postoperative abdominal computed tomography (CT) scans performed for routine cancer follow-up between 3 and 36months after surgery were assessed retrospectively. During the study period, 276 patients had undergone anterior resection for CRC, with 206 (75%) having been performed laparoscopically. A total of 198 eligible patients were identified, and a follow-up CT scan was available in 105 (53%) of these patients (median time to CT 10months, range 3-34). Only one of the 198 (0.5%) patients presented with an acute small bowel obstruction secondary to an IH during follow-up. However, the prevalence of asymptomatic IH was noted to be much higher in the postoperative CT scans occurring in 22 of 105 (21%) patients. Asymptomatic IH after laparoscopic left-sided colorectal resection is common. Given the potential risk of acute small bowel obstruction and ischemia, routine closure of the mesenteric defect should be considered.

Quantitative Indocyanine Green Fluorescence Imaging Used to Predict Anastomotic Leakage Focused on Rectal Stump During Laparoscopic Anterior Resection.

Background: Anastomotic leakage (AL) is arguably the most troublesome complication of anterior resection (AR). In recent years, however, indocyanine green (ICG) fluorescence imaging has been recently used to evaluate blood flow in the anastomosis site, and it has been suggested that AL may be predicted. We reported the effectiveness of predicting AL in colorectal cancer surgery by observing a quantitative laparoscopic ICG fluorescence imaging for the first time. The purpose of this study was to predict the risk of postoperative AL by quantitative laparoscopic ICG fluorescence imaging focused on the rectal stamp, which is one of the major causes of AL in AR, and to construct diverting stoma (DS) only in appropriate cases. Methods: We studied the 25 patients who underwent elective laparoscopic AR for rectal cancer at our hospital between July 2016 and June 2017. Before enforcing double-stapling technique anastomosis, we injected ICG intravenously, and laparoscopically evaluated blood flow on the rectal stump. We analyzed quantitatively the relationship between various parameters and AL. Results: Median T0, from when the ICG was injected intravenously and the ICG disappeared from the injection route to the rise of the histogram of intensity, in AL group was significantly longer than that in non-AL group (P = .03). There were no other significant differences between AL and non-AL groups. Conclusions: T0 was longer in patients with AL than in those without. If prolonged T0 can be recognized intraoperatively, it will be possible to construct DS for appropriate patients only.

New Anastomosis Technique to Prevent Anastomotic Leakage in Laparoscopic Anterior Resection for Rectal Cancer, Especially Upper Rectal Cancer.

Anastomotic leakage (AL) is a major problem in rectal cancer surgery. To prevent AL, we developed a side-to-side anastomosis technique using a circular stapler and termed it the circular side stapling technique (CST). We herein report the method and outcome of the CST. In this study, we analyzed 154 patients with stage 0 to III rectal cancer who underwent curative laparoscopic low anterior resection. Perioperative factors and complications were compared between the CST and usual double stapling technique (DST). The CST was performed in 110 of the 154 patients. When comparing the outcomes of patients with upper rectal cancer. AL occurred in no patients in the CST group and in three patients in the DST group (p=0.011). The CST prevented AL in all patients with upper rectal cancer. The CST is a safe and useful procedure in laparoscopic anterior resection. This technique can prevent AL, especially in patients with upper rectal cancer.

Thermographic Evaluation of Intestinal Blood Flow during Laparoscopic Anterior Resection

Thermographic Evaluation of Intestinal Blood Flow during Laparoscopic Anterior Resection

CORRELATION BETWEEN THE LEVEL OF COLORECTAL ANASTOMOSIS AND ANORECTAL FUNCTION.

SUMMARYAnterior rectal resection is a standard surgical procedure for treating carcinomas of rectum and distal sigmoid colon. In many cases of anterior rectal resection, postoperatively some level of fecal incontinence may occur. The aim of our study was to evaluate the impact of the colorectal anastomosis level on anorectal functional disorder. In our prospective study, the participants were patients diagnosed with carcinoma of rectum or distal sigmoid colon. All patients underwent standard open or laparoscopic anterior rectal resection. Six months after the surgery, the function of anorectum was evaluated in all participants. Finally, 38 patients were analyzed, including 13/38 (34.2%) patients with high rectal anastomosis, 11/38 (28.9%) with mid rectal anastomosis and 14/38 (36.8%) with low rectal anastomosis. Patients with a lower level of anastomosis had a statistically significantly greater number of stools, higher urgency and discrimination impairment, more pronounced solid, liquid and gas incontinence, and greater need for diapers (p<0.05 all). Therefore, patients with lower anastomosis had a statistically significant impairment of their quality of life and higher Wexner score (p<0.001 for both analyses). Our study results suggested reduced neorectal capacity to be the main pathophysiological factor for the development of postoperative anorectal function impairment.

Safety and survival outcomes of transanal natural orifice specimen extraction using prolapsing technique for patients with middle- to low-rectal cancer.

ObjectiveThe transanal approach to specimen collection, combined with the prolapsing technique, is a well-established and minimally invasive surgery for treating rectal cancer. However, reports on outcomes for this approach are sparse. We compared short- and long-term outcomes of conventional laparoscopic surgery (CLS) vs. transanal natural orifice specimen extraction (NOSE) using the prolapsing technique for patients with middle- to low-rectal cancer. MethodsFrom January 2013 to December 2017, we enrolled consecutive patients with middle- to low-rectal cancer undergoing laparoscopic anterior resection. Totally, 50 patients who underwent transanal NOSE using the prolapsing technique were matched with 50 patients who received CLS. Clinical parameters and survival outcomes between the two groups were compared.ResultsEstimated blood loss (29.70±29.28 vs. 52.80±45.09 mL, P=0.003), time to first flatus (2.50±0.79 vs. 2.86±0.76, P=0.022), time to liquid diet (3.62±0.64 vs. 4.20±0.76 d, P<0.001), and the need for analgesics (22%vs. 48%, P=0.006) were significantly lower for the NOSE group compared to the CLS group. The incidences of overall complications and fecal incontinence were comparable in both groups. After a median follow-up of 44.52 months, the overall local recurrence rate (6% vs. 5%, P=0.670), 3-year disease-free survival (86.7% vs. 88.0%, P=0.945) and 3-year overall survival (95.6% vs. 96.0%, P=0.708), were not significantly different. ConclusionsFor total laparoscopic rectal resection, transanal NOSE using the prolapsing technique is effective and safe, and associated with less trauma and pain, a faster recovery, and similar survival outcomes compared to CLS.

PREVENTION OF COLORECTAL ANASTOMOTIC LEAK

Summary. Colorectal anastomotic leak after low anterior resection of sigmoid colon and rectum is one of the hardest complications leading to perioperative morbidity and mortality increase and prolonged hospital stay. One of the directions of contemporary research includes assessment and improval of anastomotic technique as well with the use of staplers to decrease the risk of anastomotic leak and rate of uncomfortable protective ileostomy. There is no consensus today about this matter.&#x0D; In our research we dealt with the results of 92 patients after laparoscopic anterior resection for rectal cancer. The main group consisted of 32 (32.9%) patients who had undergone laparoscopic anterior resection for rectal cancer with the use of modified in our clinic anastomotic technique and intraoperative videoscopic assessment of the colorectal anastomosis. The control group consisted of 60 (65.2%) patients after standard traditional laparotomy for rectal cancer. 7.6% of the patients in total had specific related to the surgical techniques complications at the intra and postoperative period with no statistic difference between the groups. The modified in the clinic anastomotic technique which includes oversawing of the stapler line with seroserous stitches and anastomose assessment by simple laparoscope videorectoscopy proved to be useful and prevented leak in all the patients.

Relationship between anastomotic leakage and CT value of the mesorectum in laparoscopic anterior resection for rectal cancer.

This study aims to indicate whether the CT value of the mesorectum could be correlated with the incidence of anastomotic leakage (AL) in laparoscopic surgery for rectal cancer. The study subjects included 173 patients who underwent laparoscopic anterior resection (LAR) for rectal cancer from September 2005 to 2016 in our institution as well as reliable contrast-enhanced CT preoperatively. Univariate and multivariate analyses were performed to determine the correlation between surgical outcomes, including AL and CT value of the mesorectum. AL was observed in 30 (17.3%) patients. Amongst short-term surgical outcomes, overall complication showed significant correlation with the CT value of the mesorectum (P=0.003). In addition, AL was the only factor, which significantly correlated with the CT value of the mesorectum (P=0.017). By plotting receiver operating characteristic curve, -75 HU was the threshold of the CT value of the mesorectum for predicting AL with an area under the curve of 0.772. Categorized into two groups as per the threshold, low group showed significantly higher incidence of AL (OR, 2.738; 95% CI, 1.105-6.788; P=0.030) as well as whole complications (OR, 4.431; 95%CI, 1.912-10.266; P=0.001). The CT value of the mesorectum may be a helpful preoperative radiological biomarker to predict AL after LAR for rectal cancer.