Bowel preparation for elective colorectal resection: multi-treatment machine learning analysis on 6241 cases from a prospective Italian cohort.

BACKGROUND: Current evidence concerning bowel preparation before elective colorectal surgery is still controversial. This study aimed to compare the incidence of anastomotic leakage (AL), surgical site infections (SSIs), and overall morbidity (any adverse event, OM) after elective colorectal surgery using four different types of bowel preparation. METHODS: A prospective database gathered among 78 Italian surgical centers in two prospective studies, including 6241 patients who underwent elective colorectal resection with anastomosis for malignant or benign disease, was re-analyzed through a multi-treatment machine-learning model considering no bowel preparation (NBP; No. = 3742; 60.0%) as the reference treatment arm, compared to oral antibiotics alone (oA; No. = 406; 6.5%), mechanical bowel preparation alone (MBP; No. = 1486; 23.8%), or in combination with oAB (MoABP; No. = 607; 9.7%). Twenty covariates related to biometric data, surgical procedures, perioperative management, and hospital/center data potentially affecting outcomes were included and balanced into the model. The primary endpoints were AL, SSIs, and OM. All the results were reported as odds ratio (OR) with 95% confidence intervals (95% CI). RESULTS: Compared to NBP, MBP showed significantly higher AL risk (OR 1.82; 95% CI 1.23-2.71; p = .003) and OM risk (OR 1.38; 95% CI 1.10-1.72; p = .005), no significant differences for all the endpoints were recorded in the oA group, whereas MoABP showed a significantly reduced SSI risk (OR 0.45; 95% CI 0.25-0.79; p = .008). CONCLUSIONS: MoABP significantly reduced the SSI risk after elective colorectal surgery, therefore representing a valid alternative to NBP.

Abdominal drainage after elective colorectal surgery: propensity score-matched retrospective analysis of an Italian cohort.

BACKGROUND: In Italy, surgeons continue to drain the abdominal cavity in more than 50 per cent of patients after colorectal resection. The aim of this study was to evaluate the impact of abdominal drain placement on early adverse events in patients undergoing elective colorectal surgery. METHODS: A database was retrospectively analysed through a 1:1 propensity score-matching model including 21 covariates. The primary endpoint was the postoperative duration of stay, and the secondary endpoints were surgical site infections, infectious morbidity rate defined as surgical site infections plus pulmonary infections plus urinary infections, anastomotic leakage, overall morbidity rate, major morbidity rate, reoperation and mortality rates. The results of multiple logistic regression analyses were presented as odds ratios (OR) and 95 per cent c.i. RESULTS: A total of 6157 patients were analysed to produce two well-balanced groups of 1802 patients: group (A), no abdominal drain(s) and group (B), abdominal drain(s). Group A versus group B showed a significantly lower risk of postoperative duration of stay >6 days (OR 0.60; 95 per cent c.i. 0.51-0.70; P < 0.001). A mean postoperative duration of stay difference of 0.86 days was detected between groups. No difference was recorded between the two groups for all the other endpoints. CONCLUSION: This study confirms that placement of abdominal drain(s) after elective colorectal surgery is associated with a non-clinically significant longer (0.86 days) postoperative duration of stay but has no impact on any other secondary outcomes, confirming that abdominal drains should not be used routinely in colorectal surgery.

Mechanical bowel preparation in elective colorectal surgery: a propensity score-matched analysis of the Italian colorectal anastomotic leakage (iCral) study group prospective cohorts.

Retrospective evaluation of the effects of mechanical bowel preparation (MBP) on data derived from two prospective open-label observational multicenter studies in Italy regarding elective colorectal surgery. MBP for elective colorectal surgery remains a controversial issue with contrasting recommendations in current guidelines. The Italian ColoRectal Anastomotic Leakage (iCral) study group, therefore, decided to estimate the effects of no MBP (treatment variable) versus MBP for elective colorectal surgery. A total of 8359 patients who underwent colorectal resection with anastomosis were enrolled in two consecutive prospective studies in 78 surgical centers in Italy from January 2019 to September 2021. A retrospective PSMA was performed on 5455 (65.3%) cases after the application of explicit exclusion criteria to eliminate confounders. The primary endpoints were anastomotic leakage (AL) and surgical site infections (SSI) rates; the secondary endpoints included SSI subgroups, overall and major morbidity, reoperation, and mortality rates. Overall length of postoperative hospital stay (LOS) was also considered. Two well-balanced groups of 1125 patients each were generated: group A (No MBP, true population of interest), and group B (MBP, control population), performing a PSMA considering 21 covariates. Group A vs. group B resulted significantly associated with a lower risk of AL [42 (3.5%) vs. 73 (6.0%) events; OR 0.57; 95% CI 0.38-0.84; p = 0.005]. No difference was recorded between the two groups for SSI [73 (6.0%) vs. 85 (7.0%) events; OR 0.88; 95% CI 0.63-1.22; p = 0.441]. Regarding the secondary endpoints, no MBP resulted significantly associated with a lower risk of reoperation and LOS > 6 days. This study confirms that no MBP before elective colorectal surgery is significantly associated with a lower risk of AL, reoperation rate, and LOS < 6 days when compared with MBP.

Laparoscopic Eradication of Deep Endometriosis With Segmental Rectosigmoid Resection and Bilateral Posterior Parametrectomy With Nerve-sparing "Touchless" Technique According to the "Negrar Method".

OBJECTIVE: To demonstrate nerve-sparing laparoscopic eradication of deep endometriosis with rectal and parametrial resection based on the Negrar method [1] using the "touchless" technique. DESIGN: Stepwise video case demonstration with narration. SETTING: Tertiary level endometriosis unit. The patient was a 28 year-old nulliparous patient referred for surgery with persistent dysmenorrhea, dyspareunia, and dyschezia despite medical management (progestin-containing hormonal pills). Preoperative ultrasound demonstrated bilateral endometriomas, diffuse adenomyosis, and 35 mm × 17 mm stenosing rectal nodule. Histopathology confirmed 60% stenosis of the rectum secondary to the endometriotic nodule up to submucosal layer with margins free of endometriosis. She was discharged 7 days postoperatively with no postoperative complications. INTERVENTIONS: Laparoscopic nerve-sparing eradication of deep endometriosis with segmental rectosigmoid resection and bilateral posterior parametrectomy [2] according to the "Negrar method" with nerve-sparing "touchless" technique, sliding the nerve bundles laterocaudally, and keeping intact the visceral pelvic fascia covering them, thus without direct contact with the nerves. CONCLUSION: In our experience, based on more than 3000 of these procedures [3], this nerve-sparing procedure, based on identifying the nerves and their laterocaudad dissection, without a direct impact on their fibers but just on their fascial envelopes has proven successful in lowering the rates of postoperative dysfunctions and neural impairment related to neuro-apraxia and edema that occurs by directly affecting them [1]. Although there are no robust data to demonstrate benefit of "touchless" nerve-sparing dissection techniques, neuro-apraxia from compression of neural fibers that has been observed can be minimized [1,4,5].

Early Quality of Life Assessment After Segmental Colorectal Resection for Deep Infiltrating Endometriosis.

STUDY OBJECTIVE: Endometriosis is a benign condition afflicting women of reproductive age that significantly impacts their quality of life (QoL). Given its debilitating symptoms and prevalence, it is essential to define its proper management. In this study, we have assessed patient-reported outcomes among women having undergone segmental colorectal resection for deep infiltrating endometriosis. Any correlation between preoperative nutritional status and overall postoperative complications has also been analyzed. STUDY DESIGN: Prospective observational study. SETTING: Public medical center. PATIENTS: One hundred forty consecutive patients that had undergone segmental colorectal resection for DIE between November 2020 and October 2021 at IRCCS Sacro Cuore Don Calabria Hospital of Negrar of Valpolicella (Verona, Italy). INTERVENTIONS: Patient-reported outcomes were measured using data collected from the MD Anderson Symptom Inventory for gastrointestinal surgery patients and Euro-QoL Group EQ-5D-5L (EQ-5Q-5L) questionnaires, which were administered preoperatively (T0), at discharge (T1) and at 4 to 6 weeks after surgery (T2). Nutritional status was examined through the Mini Nutritional Assessment Short form and Prognostic Nutritional Index. MEASUREMENTS AND MAIN RESULTS: A significant improvement in the EQ-5Q-5L and MDASI-GI scores was noted between T0 and T2 (p <. 001 and p <. 001, respectively.) No statistically significant differences were found in scores at T2 between patients who had experienced postoperative complications and those who had not. No statistically significant association was observed between the presence of malnutrition and overall postoperative complications and their severity. CONCLUSION: This study confirms, through patient-reported outcomes, the pivotal role of surgery in improving the QoL at 4 to 6 weeks of women affected by endometriosis who have previously been unresponsive to medical therapy.

"Things Have Changed"-Laparoscopic Cytoreduction for Advanced and Recurrent Ovarian Cancer: The Experience of a Referral Center on 108 Patients.

OBJECTIVE: To report the feasibility of laparoscopic cytoreduction surgery for primary and recurrent ovarian cancer in a select group of patients. METHODS: A retrospective analysis was conducted on a cohort of patients with FIGO stage IIIA-IV advanced ovarian cancer who underwent laparoscopic primary debulking surgery (PDS), interval debulking surgery (IDS), or secondary debulking surgery (SDS) between June 2008 and January 2020. The primary endpoint was achieving optimal cytoreduction, defined as residual tumor less than 1 cm. Secondary endpoints included evaluating surgical complications and long-term survival, assessed at three-month intervals during the initial two years and then every six months. RESULTS: This study included a total of 108 patients, among whom, 40 underwent PDS, 44 underwent IDS, and 24 underwent SDS. Optimal cytoreduction rates were found to be 95.0%, 97.7%, and 95.8% for the PDS, ISD, and SDS groups, respectively. Early postoperative complications (<30 days from surgery) occurred in 19.2% of cases, with 7.4% of these cases requiring reintervention. One patient died following postoperative respiratory failure. Late postoperative complications (<30 days from surgery) occurred in 9.3% of cases, and they required surgical reintervention only in one case. After laparoscopic optimal cytoreduction with a median follow-up time of 25 months, the overall recurrence rates were 45.7%, 38.5%, and 39.3% for PDS, ISD, and SDS, respectively. The three-year overall survival rates were 84%, 66%, and 63%, respectively, while the three-year disease-free survival rates were 48%, 51%, and 71%, respectively. CONCLUSIONS: Laparoscopic cytoreduction surgery is feasible for advanced ovarian cancer in carefully selected patients, resulting in high rates of optimal cytoreduction, satisfactory peri-operative morbidity, and encouraging survival outcomes. Future studies should focus on establishing standardized selection criteria and conducting well-designed investigations to further refine patient selection and evaluate long-term outcomes.

iColon, a patient-focused mobile application for perioperative care in colorectal surgery: Results from 444 patients.

AIM: The aim of this study is to assess if a patient-focused mobile application can increase compliance with active Enhanced Recovery After Surgery (ERAS) items and thereby improve surgery-related outcomes and patient satisfaction. METHOD: This is a prospective observational study of patients admitted for elective colorectal surgery, under the ERAS protocol, and having access to the mobile application iColon during all perioperative phases. RESULTS: The 444 participants were included in the study. The overall adherence to the use of iColon was 62.4%. The overall adherence to active ERAS items was 74.1%. Adherence to the use of iColon significantly impacted adherence to active ERAS items. The use of the application was negatively related with factors such as age, type of disease, and postoperative complications. In the postdischarge phase, low adherence to active ERAS items typically indicates an increased likelihood of readmission; however, the use of iColon correlated significantly with a reduction in the 30-day readmission rate. A survey regarding patient satisfaction and confidence in using iColon resulted in positive feedback in more than 94% of cases, while 92.7% reported better quality of care. CONCLUSION: Our findings suggest that digital health tools are beneficial and effective in the follow up of patients after early discharge. Our mobile application, iColon, represents user-friendly technology that is well-accepted. It has real-world implications in increasing adherence to active ERAS items, which results in an improvement in perceived quality of care by its users.

Three-row versus two-row circular staplers for left-sided colorectal anastomosis: a propensity score-matched analysis of the iCral 2 and 3 prospective cohorts.

BACKGROUND: Since most anastomoses after left-sided colorectal resections are performed with a circular stapler, any technological change in stapling devices may influence the incidence of anastomotic adverse events. The aim of the present study was to analyze the effect of a three-row circular stapler on anastomotic leakage and related morbidity after left-sided colorectal resections. MATERIALS AND METHODS: A circular stapled anastomosis was performed in 4255 (50.9%) out of 8359 patients enrolled in two prospective multicenter studies in Italy, and, after exclusion criteria to reduce heterogeneity, 2799 (65.8%) cases were retrospectively analyzed through a 1:1 propensity score-matching model including 20 covariates relative to patient characteristics, to surgery and to perioperative management. Two well-balanced groups of 425 patients each were obtained: group (A) - true population of interest, anastomosis performed with a three-row circular stapler; group (B) - control population, anastomosis performed with a two-row circular stapler. The target of inferences was the average treatment effect in the treated (ATT). The primary endpoints were overall and major anastomotic leakage and overall anastomotic bleeding; the secondary endpoints were overall and major morbidity and mortality rates. The results of multiple logistic regression analyses for the outcomes, including the 20 covariates selected for matching, were presented as odds ratios (OR) and 95% confidence intervals (95% CI). RESULTS: Group A versus group B showed a significantly lower risk of overall anastomotic leakage (2.1 vs. 6.1%; OR 0.33; 95% CI 0.15-0.73; P =0.006), major anastomotic leakage (2.1 vs. 5.2%; OR 0.39; 95% CI 0.17-0.87; P =0.022), and major morbidity (3.5 vs. 6.6% events; OR 0.47; 95% CI 0.24-0.91; P =0.026). CONCLUSION: The use of three-row circular staplers independently reduced the risk of anastomotic leakage and related morbidity after left-sided colorectal resection. Twenty-five patients were required to avoid one leakage.

"A Space Odyssey" on Laparoscopic Segmental Rectosigmoid Resection for Deep Endometriosis: A Seventeen-year Retrospective Analysis of Outcomes and Postoperative Complications among 3050 Patients Treated in a Referral Center.

STUDY OBJECTIVE: To evaluate the feasibility of laparoscopic rectosigmoid resection for bowel endometriosis (RSE), reporting surgical and short-term postoperative outcomes in a consecutive large series of patients. DESIGN: A retrospective cohort study. SETTING: Third-level national referral center for deep endometriosis (DE). PATIENTS: 3050 patients with symptomatic RSE requiring surgical treatment. INTERVENTIONS: Nerve-sparing laparoscopic resection for RSE perfomed by a multidisciplinary team. After collecting intraoperative surgical characteristics, postoperative complications were collected by evaluating the risk factors associated with their onset. MEASUREMENTS AND MAIN RESULTS: Clavien-Dindo IIIb postoperative complications were noted in 13.1% of patients, with anastomotic leakage and rectovaginal fistula accounting for 3.0% and 1.9%, respectively. Postoperative bladder impairment was observed in 13.9% of patients during hospital discharge but spontaneously decreased to 4.5% at the first evaluation after 30 days, alongside a statistically significant change towards global symptom improvement. Multivariate analyses were done to identify the risk factors for segmental bowel resection in terms of occurrence of postoperative major complications. Ultralow (≤5 cm from the anal verge), low rectal anastomosis (<8 cm, >5 cm), parametrectomy, vaginal resection, and previous surgeries seemed more related to anastomotic leakage, rectovaginal fistula, and bladder retention. CONCLUSIONS: Laparoscopic rectosigmoid resection for RSE seems an effective and feasible procedure. The surgical complication rate is not negligible but could be reduced by implementing a multidisciplinary approach, an endless improvement in nerve-sparing techniques and surgical anatomy, as well as technological enhancements. Real future challenges will be to reduce the time for the first diagnosis of DE and the likelihood of surgical indications.

Sexual, urinary, and intestinal dysfunction after rectal surgery: pre-, intra-, and post-operative predictors and trends over time in a single high-volume center.

The incidence of long-term complications after rectal surgery varies widely among studies, and data regarding functional sequelae after transanal surgery are lacking. The aim of this study is to describe the incidence and change over time of sexual, urinary, and intestinal dysfunction in a single-center cohort, identifying independent predictors of dysfunction. A retrospective analysis of all rectal resections performed between March 2016 and March 2020 at our institution was conducted. Validated questionnaires were administered to assess post-operative function. Predictors of dysfunction were assessed by univariate and multivariate analysis. Latent class analysis was used to distinguish different risk profile classes. One hundred and forty-five patients were included. Sexual dysfunction at 1 month rose to 37% for both sexes, whereas urinary dysfunction reached 34% in males only. A significant (p < 0.05) improvement in urogenital function was observed between 1 and 6 months only. Intestinal dysfunction increased at 1 month, with no significant improvement between 1 and 12 months. Independent predictors of genitourinary dysfunction were post-operative urinary retention, pelvic collection, and Clavien-Dindo score ≥ III (p < 0.05). Transanal surgery resulted an independent predictor of better function (p < 0.05). Transanal approach, Clavien-Dindo score ≥ III, and anastomotic stenosis were independent predictors of higher LARS scores (p < 0.05). Maximum dysfunction was found at 1 month after surgery. Improvement was earlier for sexual and urinary dysfunction, whereas intestinal dysfunction improved slower and depended on pelvic floor rehabilitation. Transanal approach was protective for urinary and sexual function, although associated with a higher LARS score. Prevention of anastomosis-related complications resulted protective of post-operative function.

Laparoscopic colorectal resection for deep infiltrating endometriosis: can we reliably predict anastomotic leakage and major postoperative complications in the early postoperative period?

BACKGROUND: Anastomotic leakage (AL) and major complications after colorectal resection for deep infiltrating endometriosis (DIE) have a remarkable impact on patient outcomes. The aim of this study is to assess the predictive value of C-reactive protein (CRP), procalcitonin (PCT), white blood cell count (WBCs) and the Dutch Leakage Score (DLS) as reliable markers in the early diagnosis of AL and major complications after laparoscopic colorectal resection for DIE. METHODS: 262 consecutive women undergoing laparoscopic colorectal resection for DIE between September 2017 and September 2018 were prospectively enrolled. WBCs, CRP, PCT and DLS were recorded at baseline and on postoperative day (POD) 2, 3 and 6 then statistically analyzed as predictors of AL and severe postoperative complications. RESULTS: The AL rate was 3.2%. The major morbidity rate was 11.2%. No postoperative mortality was recorded. The postoperative trend of DLS and serum levels of CRP and PCT, but not WBCs, were significantly higher in women developing AL and severe complications. DLS had better sensitivity and specificity than biomarkers on all postoperative days as a predictor of AL and major complications. CRP and PCT have a low positive predictive value (PPV) and a high negative predictive value (NPV) for AL and major complications on POD3 and POD6. The risk of malnutrition was significantly related to AL. CONCLUSIONS: The combination of DLS as a standardized postoperative clinical monitoring system and CRP and PCT as serum biomarkers, allows the exclusion of AL and major complications in the early postoperative period after laparoscopic colorectal resection for DIE, thus ensuring a safe patient discharge.

"The Sword in the Stone": radical excision of deep infiltrating endometriosis with bowel shaving-a single-centre experience on 703 consecutive patients.

BACKGROUND: Laparoscopic segmental bowel resection, disc excision and rectal shaving are described as surgical options for the treatment of bowel endometriosis, but the gold standard has not yet established. The aim of the study is to investigate the efficacy of the laparoscopic bowel shaving technique in terms of pain symptomatology and to analyse early and late postoperative complications. METHODS: Retrospective cohort study of a series of 703 consecutive patients treated between January 2014 and December 2019 in a tertiary care referral centre. All patients underwent laparoscopic bowel shaving with concomitant radical excision of DIE. RESULTS: Bilateral posterolateral parametrectomy and ureterolysis were performed, respectively, in 314 (44.7%) and 318 cases (45.2%). A radical hysterectomy was performed in 107 cases (82.9%). Postoperative complications were infrequent: 17 patients required a reoperation (2.4%) and in this subgroup we registered 2 rectovaginal fistulas (0.3%), 4 patients received blood transfusion (0.6%), 12 patients (1.7%) experienced postoperative fever, 6 patients experienced impaired bladder voiding (0.9%) after 6 months. Median follow-up was 14 months. The study reported good clinical and surgical results, with a regression of symptoms (p < 0.0001) and an overall rate of recurrence of 6.5%. Clinical and instrumental criteria of bowel endometriosis relapse were exclusively detected in 5 patients (0.8%). Eleven patients (1.7%) with relapsed endometriosis were reoperated. CONCLUSIONS: Bowel shaving is a feasible and valuable surgical procedure. It is only the last step of a complex surgery which is aimed to minimize the residual quote of infiltrating nodule and requires a multidisciplinary team to achieve optimal treatment preoperatively, intraoperatively and postoperatively.

ERAS program adherence-institutionalization, major morbidity and anastomotic leakage after elective colorectal surgery: the iCral2 multicenter prospective study.

BACKGROUND: Enhanced recovery after surgery (ERAS) programs influence morbidity rates and length of stay after colorectal surgery (CRS), and may also impact major complications and anastomotic leakage rates. A prospective multicenter observational study to investigate the interactions between ERAS program adherence and early outcomes after elective CRS was carried out. METHODS: Prospective enrolment of patients submitted to elective CRS with anastomosis in 18 months. Adherence to 21 items of ERAS program was measured upon explicit criteria in every case. After univariate analysis, independent predictors of primary endpoints [major morbidity (MM) and anastomotic leakage (AL) rates] were identified through logistic regression analyses including all significant variables, presenting odds ratios (OR). RESULTS: Institutional ERAS protocol was declared by 27 out of 38 (71.0%) participating centers. Median overall adherence to ERAS program items was 71.4%. Among 3830 patients included in the study, MM and AL rates were 4.7% and 4.2%, respectively. MM rates were independently influenced by intra- and/or postoperative blood transfusions (OR 7.79, 95% CI 5.46-11.10; p < 0.0001) and standard anesthesia protocol (OR 0.68, 95% CI 0.48-0.96; p = 0.028). AL rates were independently influenced by male gender (OR 1.48, 95% CI 1.06-2.07; p = 0.021), intra- and/or postoperative blood transfusions (OR 4.29, 95% CI 2.93-6.50; p < 0.0001) and non-standard resections (OR 1.49, 95% CI 1.01-2.22; p = 0.049). CONCLUSIONS: This study disclosed wide room for improvement in compliance to several ERAS program items. It failed to detect any significant association between institutionalization and/or adherence rates to ERAS program with primary endpoints. These outcomes were independently influenced by gender, intra- and postoperative blood transfusions, non-standard resections, and standard anesthesia protocol.

iColon, a patient-focused mobile application for perioperative care in colorectal surgery: an observational, real-world study protocol.

INTRODUCTION: The enhanced recovery after surgery (ERAS) protocol provides optimised care guidelines for patients undergoing elective colorectal surgery. To ensure high compliance with active ERAS elements, patients must be educated to actively participate in the perioperative care pathway. Mobile health is a rapidly expanding area of the digital health sector that is effective in educating and engaging patients during follow-up. iColon is a mobile application designed by the Operative Unit of General Surgery of IRCCS Sacro Cuore Don Calabria Hospital of Negrar of Valpolicella, which is specifically targeted at patients undergoing elective colorectal surgery. iColon is organised into ERAS phases, and it provides real-time feedback to surgeons about a patient's adherence to perioperative active ERAS elements. METHODS AND ANALYSIS: We hypothesise that by providing a patient-focused mobile application, compliance with active ERAS elements could be improved.The first coprimary objective is to build patient confidence in using the mobile application, iColon, during perioperative care. The second coprimary objective is to establish patient compliance with active ERAS elements.Secondary objectives include examining: length of stay, 30-day readmission rate, postoperative complications and patient satisfaction of received care.This study is a prospective observational real-world study of patients undergoing elective colorectal surgery who are following the ERAS protocol and using iColon during perioperative periods between September 2020 and December 2022.By educating and engaging patients in the ERAS protocol, the mobile application, iColon, should stimulate patients to be more proactive in managing their healthcare by complying more closely with active ERAS elements. ETHICS AND DISSEMINATION: This study has been approved by the local Ethics Committee with the protocol number 29219 of 25 May 2020. The results will be actively disseminated through peer-reviewed journals, conference presentations and various community engagement activities.

ICG fluorescence imaging in colorectal surgery: a snapshot from the ICRAL study group.

BACKGROUND: Fluorescence-guided visualization is a recently proposed technology in colorectal surgery. Possible uses include evaluating perfusion, navigating lymph nodes and searching for hepatic metastases and peritoneal spread. Despite the absence of high-level evidence, this technique has gained considerable popularity among colorectal surgeons due to its significant reliability, safety, ease of use and relatively low cost. However, the actual use of this technique in daily clinical practice has not been reported to date. METHODS: This survey was conducted on April 2020 among 44 centers dealing with colorectal diseases and participating in the Italian ColoRectal Anastomotic Leakage (iCral) study group. Surgeons were approximately equally divided based on geographical criteria from multiple Italian regions, with a large proportion based in public (89.1%) and nonacademic (75.7%) centers. They were invited to answer an online survey to snapshot their current behaviors regarding the use of fluorescence-guided visualization in colorectal surgery. Questions regarding technological availability, indications and techniques, personal approaches and feelings were collected in a 23-item questionnaire. RESULTS: Questionnaire replies were received from 37 institutions and partially answered by 8, as this latter group of centers do not implement fluorescence technology (21.6%). Out of the remaining 29 centers (78,4%), fluorescence is utilized in all laparoscopic colorectal resections by 72.4% of surgeons and only for selected cases by the remaining 27.6%, while 62.1% of respondents do not use fluorescence in open surgery (unless the perfusion is macroscopically uncertain with the naked eye, in which case 41.4% of them do). The survey also suggests that there is no agreement on dilution, dosing and timing, as many different practices are adopted based on personal judgment. Only approximately half of the surgeons reported a reduced leak rate with fluorescence perfusion assessment, but 65.5% of them strongly believe that this technique will become a minimum requirement for colorectal surgery in the future. CONCLUSION: The survey confirms that fluorescence is becoming a widely used technique in colorectal surgery. However, both the indications and methods still vary considerably; furthermore, the surgeons' perceptions of the results are insufficient to consider this technology essential. This survey emphasizes the need for further research to reach recommendations based on solid scientific evidence.

Management and 1-year outcomes of anastomotic leakage after elective colorectal surgery.

PURPOSE: To analyze different types of management and one-year outcomes of anastomotic leakage (AL) after elective colorectal resection. METHODS: All patients with anastomotic leakage after elective colorectal surgery with anastomosis (76/1,546; 4.9%), with the exclusion of cases with proximal diverting stoma, were followed-up for at least one year. Primary endpoints were as follows: composite outcome of one-year mortality and/or unplanned intensive care unit (ICU) admission and additional morbidity rates. Secondary endpoints were as follows: length of stay (LOS), one-year persistent stoma rate, and rate of return to intended oncologic therapy (RIOT). RESULTS: One-year mortality rate was 10.5% and unplanned ICU admission rate was 30.3%. Risk factors of the composite outcome included age (aOR = 1.08 per 1-year increase, p = 0.002) and anastomotic breakdown with end stoma at reoperation (aOR = 2.77, p = 0.007). Additional morbidity rate was 52.6%: risk factors included open versus laparoscopic reoperation (aOR = 4.38, p = 0.03) and ICU admission (aOR = 3.63, p = 0.05). Median (IQR) overall LOS was 20 days (14-26), higher in the subgroup of patients reoperated without stoma. At 1 year, a stoma persisted in 32.0% of patients, higher in the open (41.2%) versus laparoscopic (12.5%) reoperation group (p = 0.04). Only 4 out of 18 patients (22.2%) were able to RIOT. CONCLUSION: Mortality and/or unplanned ICU admission rates after AL are influenced by increasing age and by anastomotic breakdown at reoperation; additional morbidity rates are influenced by unplanned ICU admission and by laparoscopic approach to reoperation, the latter also reducing permanent stoma and failure to RIOT rates. TRIAL REGISTRATION: ClinicalTrials.gov # NCT03560180.

Nerve-sparing laparoscopic disc excision of deep endometriosis involving the bowel: a single-center experience on 371 consecutives cases.

BACKGROUND: Bowel endometriosis is the most common pattern of Deep Endometriosis (DE). Arising from the posterior portion of the cervix and spreading to the recto-vaginal septum, utero-sacral and parametrial ligaments could lead to a distortion of normal pelvic anatomy, causing pain and infertility. Hormonal therapy is the first-line treatment in non-symptomatic patient. Conversely, laparoscopic surgical treatment has to be considered when symptoms relief are not optimal or with signs of bowel occlusion. METHODS: Retrospective experience of consecutive series of patients who referred to a third-level referral center with suspected bowel DE and failure of multiple medical treatments. After an intraoperative evaluation of nodule size with a rectal shaving of its external portion, patients underwent radical DE eradication with concomitant disc excision in rectal nodules < 3 cm with no signs of substantial full-thickness infiltration. RESULTS: A total of 371 patients were considered eligible for analysis, with a median age of 37 years. The median operative time of was 180 min, with an estimated blood loss of 100 mL and a median diameter of removed rectal nodule of 25 mm. Early postoperative procedure-related complications were 47 cases of acute rectal bleeding (12.7%), that were managed by rectal endoscopy, 3 bowel anastomotic dehiscence (0.8%), 8 hemoperitoneum (2.2%) and 3 ureteral fistula (0.8%). 22 patients experienced postoperative hyperpyrexia (5.9%), while 17 women underwent transient bladder deficiency (4.6%). Median follow-up was 60 months with a bowel recurrence rate of 2.2%. There was an improvement of all symptoms in the immediate postoperative follow-up (p < 0.0001). Among all patients with childbearing desire, the pregnancy rate found was 42.2% and was obtained by in vitro fertilization (IVF) techniques in 32% of cases. CONCLUSIONS: Laparoscopic disc excision for bowel endometriosis is an effective surgical treatment in selected residual rectal nodules < 3.0 cm. The concomitant radical DE excision contributes to a significant improvement of symptoms with an acceptable complications' rate.

Post surgical rectovaginal fistula: who really benefits from stoma diversion?

To analyze the role of stoma diversion and timing of stoma maintenance in the healing of post-surgical Recto Vaginal Fistulae (psRVF). A retrospective analysis of a prospectively maintained registry. All patients with a psRVF diagnosed at IRCCS Sacro Cuore-Don Calabria Hospital of Negrar di Valpolicella from January 2002 to December 2016 were analyzed. The baseline treatment was a fecal diversion. Patients were divided into two groups according to healing time: < 6 months (Group 1) or > 6 months (Group 2). 2043 women underwent rectal resections in the study period. We recorded 37 patients with psRVF (1.8%). Nineteen women (51.3%) healed (Group 1) within 6 months. The median time of psRVF recovery in group 1 was 99.7 days. Concomitant local treatment of the fistula did not influence the healing rate (p 0.8). Colostomies were significantly higher in group 1 (p 0.003). The size of the psRVF influenced the success rate of fistula healing with loop stoma (p 0.07). A multivariate analysis the presence of fever and pelvic abscess (pelvis sepsis) were significantly associated with diversion failure (p 0.035). A step-up approach with the maintenance of loop stoma at least for six months for all patients with psRVF could be changed. Patients with larger fistula and pelvic sepsis at index procedure should be addressed earlier to a specific second-level treatment.

Expression levels of circulating miRNAs as biomarkers during multimodal treatment of rectal cancer - TiMiSNAR-mirna: a substudy of the TiMiSNAR Trial (NCT03962088).

BACKGROUND: Neoadjuvant chemoradiotherapy followed by surgery is the mainstay treatment for locally advanced rectal cancer, leading to significant decrease in tumor size (downsizing) and a shift towards earlier disease stage (downstaging). Extensive histopathological work-up of the tumor specimen after surgery including tumor regression grading and lymph node status helped to visualize individual tumor sensitivity to chemoradiotherapy, retrospectively. As the response to neoadjuvant chemoradiotherapy is heterogeneous, however, valid biomarkers are needed to monitor tumor response. A relevant number of studies aimed to identify molecular markers retrieved from tumor tissue while the relevance of blood-based biomarkers is less stringent assessed. MicroRNAs are currently under investigation to serve as blood-based biomarkers. To date, no screening approach to identify relevant miRNAs as biomarkers in blood of patients with rectal cancer was undertaken. The aim of the study is to investigate the role of circulating miRNAs as biomarkers in those patients included in the TiMiSNAR Trial (NCT03465982). This is a biomolecular substudy of TiMiSNAR Trial (NCT03962088). METHODS: All included patients in the TiMiSNAR Trial are supposed to undergo blood collection at the time of diagnosis, after neoadjuvant treatment, after 1 month from surgery, and after adjuvant chemotherapy whenever indicated. DISCUSSION: TiMiSNAR-MIRNA will evaluate the association of variation between preneoadjuvant and postneoadjuvant expression levels of miRNA with pathological complete response. Moreover, the study will evaluate the role of liquid biopsies in the monitoring of treatment, correlate changes in expression levels of miRNA following complete surgical resection with disease-free survival, and evaluate the relation between changes in miRNA during surveillance and tumor relapse. TRIAL REGISTRATION: Clinicaltrials.gov NCT03962088 . Registered on 23 May 2019.