Ileocolic Resection Research Articles

Clinical, Radiological, and Surgical Risk Factors for Endoscopic Anastomotic Recurrence Following Surgery in Crohn's Disease.

Objective: This study investigated the radiological, clinical, and surgical factors linked to the risk of endoscopic recurrence following ileocolic resection for Crohn's disease. Materials and Methods: We conducted a retrospective analysis of data from all patients who underwent primary ileocecal resection for Crohn's disease in a single colorectal unit between 2004 and 2020. We analyzed the potential risk factors subdivided by the clinical, radiological, and surgical factors associated with morphological recurrence, as detected by endoscopy within 2 years after surgery. Cox regression was employed to ascertain the risk factors associated with such recurrence. Results: In total, 63 patients were included, and 24 (38%) had endoscopic recurrence. The age of the patient at the time of surgery was identified as a significant clinical factor associated with the risk of recurrence (HR: 1.04; p = 0.003), indicating that the probability of recurrence increases by 1% as the surgical age increases each year. The radiological factors associated with an increased risk of recurrence included localization in the distal ileum (HR: 3.526; p = 0.015), the number of pathological small-bowel segments affected by the disease (HR: 1.15; p = 0.004), and the total length of the pathological intestinal segment (HR: 1.002; p = 0.014). The presence of granulomas (HR: 6.003; p = 0.004) and the length of the resected bowel (HR: 1.01; p = 0.003) were surgical factors associated with a higher risk of recurrence. Conclusions: This study delineated several clinical, radiological, and surgical factors that serve as predictors for the endoscopic recurrence of Crohn's disease after surgery.

Comparison of index and reoperative bowel resections in Crohn's disease.

There is a scarcity of literature describing outcomes of reoperative Crohn's disease. An in-depth knowledge of these outcomes is critical for managing patient expectations and optimal perioperative planning. We sought to examine outcomes in patients undergoing reoperative surgeries for Crohn's disease compared to index operations. A retrospective chart review of surgeries performed from 2018-2023 at a single tertiary care academic institution was performed. A subgroup analysis of index vs. reoperative ileocolic resections was performed to minimize confounding due to the heterogeneity of operations between the index and reoperative groups. Out of 119 patients, 70 (59%) underwent index operations, and 49 (41%) were reoperations. Overall complication rates (24.28% vs. 34.69%, P=0.224), EBL (189.5 vs. 193.4 mL, P=0.94), operative time (209 vs. 236 min, P=0.091), length of stay (mean: 7.24 vs. 10.08 days, P=0.0142), utilization of laparoscopy (92.85% vs. 65.3%, P=0.0002) and conversion to open technique (4.61% vs. 9.37%, P=0.392) favored index cases. The laparoscopic approach narrowed the gap in length of stay between the index and reoperative groups from 2.83 to 0.6 days. Subgroup analysis of ileocolic resections (Index: 50, reoperations: 26) also favored the index operations. The current study provides valuable insight into managing patient expectations and optimal perioperative planning for reoperative Crohn's disease. Reoperations were associated with longer stays, lower utilization of laparoscopic platforms, and a trend toward higher overall complication rates. Laparoscopy reduces the gap in length of stay between index and reoperations; however, it is associated with a higher reoperation conversion rate.

Surgical and non-surgical risk factors affecting the insufficiency of ileocolic anastomosis after first-time surgery in Crohn's disease patients.

Crohn's disease (CD) often necessitates surgical intervention, particularly when it manifests in the terminal ileum and ileocecal valve. Despite undergoing radical surgery, a subset of patients experiences recurrent inflammation at the anastomotic site, necessitating further medical attention. To investigate the risk factors associated with anastomotic insufficiency following ileocecal resection in CD patients. This study enrolled 77 patients who underwent open ileocolic resection with primary stapled anastomosis. Patients were stratified into two groups: Group I comprised individuals without anastomotic insufficiency, while Group II included patients exhibiting advanced anastomotic destruction observed endoscopically or those requiring additional surgery during the follow-up period. Surgical and non-surgical factors potentially influencing anastomotic failure were evaluated in both cohorts. Anastomotic insufficiency was detected in 12 patients (15.6%), with a mean time interval of 30 months between the initial surgery and recurrence. The predominant reasons for re-intervention included stenosis and excessive perianastomotic lesions. Factors associated with a heightened risk of anastomotic failure encompassed prolonged postoperative obstruction, anastomotic bleeding, and clinically confirmed micro-leakage. Additionally, patients in Group II exhibited preoperative malnutrition and early recurrence of symptoms related to CD. Successful surgical outcomes hinge on the attainment of a fully functional anastomosis, optimal metabolic status, and clinical remission of the underlying disease. Vigilant endoscopic surveillance following primary resection facilitates the timely identification of anastomotic failure, thereby enabling noninvasive interventions.

Extended mesenterial resection vs. mesentery-sparing resection in ileocolic resection for Crohn's disease

Extended mesenterial resection vs. mesentery-sparing resection in ileocolic resection for Crohn's disease

S1346 Timing of Index Ileocolic Resection is Associated With Radiographic Recurrence in Patients With Crohn’s Disease

S1346 Timing of Index Ileocolic Resection is Associated With Radiographic Recurrence in Patients With Crohn’s Disease

Ileocolic resection with temporary ileostomy for Crohn's disease: does it affect long‐term disease recurrence compared with primary anastomosis?

AbstractBackgroundWe aimed to assess whether the risk of disease recurrence in Crohn's disease (CD) patients that undergone ileocolic resection (ICR) with temporary ileostomy and a later stoma reversal is different compared to patients that underwent a one‐stage operation.MethodsA single‐center retrospective review of all patients that underwent elective primary ICR for CD between 2010 and 2022 divided into: 2S‐ICR group‐patients who underwent two‐stage ICR. 1S‐ICR group‐patients who underwent one‐stage ICR.ResultsThe cohort included 191 patients (mean age 33.4, range 15–70), with 40 and 151 patients in the 2S‐ICR and 1S‐ICR groups, respectively. The 2S‐ICR were more comorbid, with a lower mean BMI (18 vs. 21.3, P < 0.001), higher median ASA score (3 vs. 2, P = 0.036), higher percentage on pre‐operative total parenteral nutrition (TPN) (62.5% vs. 24.5%, P < 0.001), and lower levels of pre‐operative albumin (3.3 g/dL vs. 3.8 g/dL, P < 0.001). There were no significant differences in the overall postoperative complication rate (47.5% vs. 47.7% respectively, P = 1), nor in the rate of severe complications (17.5% vs. 13.2%, P = 0.6), but, the 2S‐ICR had a longer post‐operative length‐of‐stay (14 vs. 6 days, P < 0.001) and higher rates of 30‐day readmission (30% vs. 13.2%, P = 0.017). After an overall median follow‐up of 63 months, the groups showed similar rates of endoscopic, clinical, and surgical recurrence.ConclusionsTwo‐stage ICR with a temporary ileostomy does not change long‐term CD recurrence rates compared with one‐stage ICR.

Outcomes after right-sided colon surgery in Crohn's disease versus cancer.

Surgery for Crohn's disease (CD) is considered to have more complications due to the underlying inflammation, immunosuppression, and malnutrition.We sought to study the outcomes of right-sided colonic resection in patients with CD and patients with cancer at a high-volume tertiary center utilizing a standardized perioperative protocol. This is a retrospective study of outcomes for all patients with CD or patients undergoing ileocolic resection or right hemicolectomy with ileocolic anastomosis at a single institution from 2013 to 2022. Patients were excluded if they simultaneously underwent another procedure or ostomy creation. Data were analyzed using Wilcoxon rank-sum and chi-squared tests for univariate analyses, and logistic and linear regressions for multivariate analyses. In total 141 patients with CD and 589 patients with cancer were included. Patients with CD were significantly younger with lower body mass index and less likely to have comorbidities, including diabetes and hypertension. Patients with CD were less likely to have a smoking history or prior abdominal surgery, but more likely to be on steroids. Both groups had similar rates of laparoscopy, intraoperative complications, and blood loss. Despite the preoperative and intraoperative differences, both patients with CD and patients with cancer had similar lengths of stay (LOS), readmission, reoperation, and mortality rates.None of the surgical outcomes differed significantly between the two groups.On multivariate analysis, CD diagnosis was not associated with reoperation, readmission, mortality, or LOS while controlling for other characteristics. With the use of standardized perioperative protocols, surgery for CD at a high-volume center with expertise in CD can be performed with comparable results to other indications like cancer.

Assessing robotic-assisted surgery versus open approach in penetrating Crohn's disease: advantages and outcomes in ileocolic resection.

Penetrating Crohn's disease (CD) often necessitates surgical intervention, with the open approach traditionally favored. Robotic-assisted surgery offers potential benefits but remains understudied in this complex patient population. Additionally, the lack of standardized surgical complexity scoring in CD hinders research and comparisons. We retrospectively analyzed adult patients with penetrating CD who underwent either robotic-assisted ileocolic resection (RICR) or open ileocolic resection (OICR) at our institution from January 2007 to December 2021. We assessed endpoints, including length of stay, complications, readmissions, reoperations, and other perioperative outcomes. RICR demonstrated safety outcomes comparable to OICR. Importantly, RICR patients experienced significantly reduced estimated blood loss (p < 0.0001), shorter hospital stays (median 4.5days versus 6.9days; p = 0.01), lower surgical site infection rates (0% versus 15.4%; p = 0.01), and decreased 30-day readmission rates (0% versus 15.4%; p = 0.01). Linear regression analysis revealed the need for additional strictureplasties (coefficient: 84.8; p = 0.008), colonic resections (coefficient: 41.7; p = 0.008), and estimated blood loss (coefficient: 0.07; p = 0.002) independently correlated with longer operative times). Robotic-assisted surgery appears to be a safe and potentially beneficial alternative for the surgical management of penetrating CD, offering advantages in perioperative outcomes reducing length of stay, blood loss, surgical site infection rates, and readmission rates. Further validation with larger cohorts is warranted.

Ileocolic resection for Crohn's disease and the Kono S anastomosis: all that is gold does not glitter.

Ileocolic resection for Crohn's disease and the Kono S anastomosis: all that is gold does not glitter.

Histologic Activity From Neoterminal Ileal Biopsies in Patients With Crohn's Disease in Endoscopic Remission is Associated With Postoperative Recurrence.

Following ileocolic resection (ICR), the clinical importance and prognostic implications of histologic activity on biopsies in Crohn's disease (CD) patients with endoscopic remission are not well defined. The aim of this study was to determine if histologic activity in patients with endoscopic remission is associated with future risk of endoscopic and/or radiologic postoperative recurrence (POR). In this multicenter retrospective cohort study, adult patients with CD who underwent ICR between 2009 and 2020 with endoscopic biopsies of ileal mucosa from Rutgeerts i0 on index colonoscopy were included. The composite rate of endoscopic (Rutgeerts score ≥i2b) and radiologic (active inflammation on imaging) recurrence was compared in patients with and without histologic activity using a Kaplan-Meier survival analysis. A multivariable Cox proportional hazard regression model including clinically relevant risk factors of POR, postoperative biologic prophylaxis, and histology activity was designed. A total of 113 patients with i0 disease on index colonoscopy after ICR were included. Of these, 42% had histologic activity. Time to POR was significantly earlier in the histologically active versus normal group ( P = 0.04). After adjusting for clinical risk factors of POR, histologic activity (HR 2.37, 95% CI 1.17-4.79; P = 0.02) and active smoking (HR 2.54, 95% CI 1.02-6.33; P = 0.05) were independently associated with subsequent composite POR risk. In patients with postoperative CD, histologic activity despite complete endoscopic remission is associated with composite, endoscopic, and radiographic recurrence. Further understanding of the role of histologic activity in patients with Rutgeerts i0 disease may provide a novel target to reduce disease recurrence in this population.

Redo Ileocolic Resection for Crohn's Disease, Does It Palliate the Patients as Good as the Primary Resection?

Objective: We questioned how redo ileocolic resection (R-ICR) in Crohn's disease (CD) alleviates patients in the long-term compared with primary resection. Methods: A single-center retrospective analysis of patients who underwent an elective ICR without diversion between the years 2010-2022. The cohort was divided into two groups, namely, R-ICR and primary ileocolic resection (P-ICR). Results: The study included 181 patients, of which 30 patients are in the R-ICR group (mean age 42.3 years) and 151 patients in the P-ICR group (mean age 32.6 years). The R-ICR patients underwent an open approach (76.7% versus 25.2% among the P-ICR, p < .001), had significantly longer operations (mean 200.9 minutes versus 157.2 minutes, respectively, P = .002), and had higher estimated blood loss (mean 350 mL versus 267.4 mL, P = .043). The groups were similar in overall postoperative morbidity, severe postoperative complications (10% versus 13.2%, P = .762), and median length of hospital stay (12.1 days versus 7.4 days, P = .214). After a median follow-up of 64.2 months, there were no significant differences between the groups in terms of endoscopic recurrence (43.3% versus 60.9% in the P-ICR group, P = .104) or in clinical recurrence (43.3% versus 55.6%, respectively, P = .216), but the R-ICR had a significant higher rate of surgical recurrences (23.3% versus 5.3%, respectively, P = .004). Conclusion: R-ICR for CD is a significantly more challenging operation than the primary resection, and patients undergoing a R-ICR are more susceptible to a future surgical intervention than those having P-ICR.

Effect of mesenteric sparing or extended resection in primary ileocolic resection for Crohn's disease on postoperative endoscopic recurrence (SPICY): an international, randomised controlled trial

Retrospective research suggests that excision of the affected mesentery can improve outcomes after an ileocoecal resection in Crohn's disease. However, prospective data from randomised controlled trials are scarce. We aimed to compare rates of postoperative recurrence in patients with Crohn's disease who underwent extended mesenteric resection. This international, randomised controlled trial was done in six hospitals and tertiary care centres in the Netherlands and Italy. Eligible patients were aged 16 years or older and had Crohn's disease that was previously confirmed by endoscopy in the terminal ileum or ileocolic region (L1 or L3 disease), with an imaging update in the past 3 months (ultrasound, MRI, or CT enterography). Eligible patients were scheduled to undergo primary ileocolic resection with ileocolic anastomosis. Enrolled patients were assigned by use of simple random allocation (1:1) to either extended mesenteric resection (intervention) or conventional mesenteric sparing resection (control). The primary endpoint was endoscopic recurrence 6 months after surgery. Analyses were done in all patients with primary endpoint data, excluding those who had no anastomosis, a postoperative diagnosis other than Crohn's disease, or withdrew consent. This trial was registered with ClinicalTrials.gov, NCT04538638. Between Feb 19, 2020, and April 24, 2023, we assessed 217 patients for eligibility. 78 patients were excluded due to failure to meet the inclusion criteria or refusal to participate. 139 patients were enrolled and randomly assigned to either extended mesenteric resection (n=71) or mesenteric sparing resection (n=68). All 139 patients underwent surgery. Six patients were excluded after random assignment due to withdrawal of consent (n=2), postoperative diagnosis other than Crohn's disease (n=2) and no anastomosis performed (in case of a stoma; n=2). Two patients were lost to follow-up, and two more patients deviated from the protocol by undergoing investigations other than endoscopy 6 months after. 133 patients were included in the baseline analysis (67 in the extended resection group and 66 in the sparing resection group) of whom 57 (43%) were male. Baseline characteristics were similar between the groups, and median patient age was 36 years (IQR 25-54). 131 patients were analysed for the primary outcome. There was no difference between groups in the rate of endoscopic recurrence at 6 months after surgery (28 [42%] of 66 patients in the extended mesenteric resection group vs 28 [43%] of 65 patients in the mesenteric sparing resection group, relative risk 0·985, 95% CI 0·663-1·464; p=1·0). Five (8%) of 66 patients in the extended mesenteric resection group had anastomotic leakage within the 30 days after surgery, as did one (2%) of 65 in the mesenteric sparing group. Postoperative complications of Clavien-Dindo grade IIIa or higher were reported in seven (11%) patients in the mesenteric resection group and five (8%) in the mesenteric sparing group. Extended mesenteric resection was not superior to conventional resection with regard to endoscopic Crohn's disease recurrence. These data support the guideline-recommended mesenteric sparing approach. Topconsortia voor Kennis en Innovatie-Topsector Life Sciences & Health.

Impact of Kono-S anastomosis on quality of life after ileocolic resection in Crohn's disease: an analysis from the SuPREMe-CD trial.

Crohn's disease has debilitating effects on patients' quality of life. Currently, there are limited data on the effect of anastomotic configuration on health-related quality of life after ileocaecal resection for Crohn's disease. This study aimed to assess the impact of Kono-S anastomosis on quality of life after ileocolic resection, compared to the conventional side-to-side anastomosis. Patients with primary or recurrent Crohn's disease participating in the ongoing SuPREMe-CD trial were interviewed about quality of life using the Inflammatory Bowel Disease Questionnaire (IBDQ). The primary endpoint was disease-specific quality of life, assessed with IBDQ. Secondary outcomes were quality of life related to bowel symptoms, systemic symptoms, social function and emotional function. Of the 94 patients included, 51 (54%) received the conventional side-to-side anastomosis and 43 (46%) the Kono-S anastomosis. Demographics were comparable between the two groups. The IBDQ was assessed at a mean follow-up of 54.0 ± 18.7 months from surgical intervention. The mean total IBDQ score was 155.1 ± 28.07 in the conventional group and 163.8 ± 25.23 in the Kono-S group (P = 0.11). When considering bowel symptoms and social function, mean scores were 50.7 and 23.5 in the conventional group, and 56.3 and 26.5 in the Kono-S group (P = 0.002 and P = 0.02, respectively). Kono-S anastomosis was independently associated with improved quality of life regarding bowel symptoms (P = 0.006) and social function (P = 0.03) after correcting for other confounding factors on linear regression analysis. Compared to conventional side-to-side anastomosis, patients with Kono-S anastomosis presented significantly better bowel symptoms and social function scores at 54 months after surgery.

Perioperative stroke deteriorates white matter integrity by enhancing cytotoxic CD8+ T-cell activation.

To explore the regulatory mechanisms of microglia-mediated cytotoxic CD8+ T-cell infiltration in the white matter injury of perioperative stroke (PIS). Adult male C57BL/6 mice were subjected to ileocolic bowel resection (ICR) 24 h prior to permanent distant middle cerebral artery occlusion (dMCAO) to establish model PIS. White matter injury, functional outcomes, peripheral immune cell infiltration, and microglia phenotype were assessed up to 28 days after dMCAO using behavioral phenotyping, immunofluorescence staining, transmission electron microscopy, western blot, and FACS analysis. We found surgery aggravated white matter injury and deteriorated sensorimotor deficits up to 28 days following PIS. The PIS mice exhibited significantly increased activation of peripheral and central CD8+ T cells, while significantly reduced numbers of mature oligodendrocytes compared to IS mice. Neutralizing CD8+ T cells partly reversed the aggravated demyelination following PIS. Pharmacological blockage or genetic deletion of receptor-interacting protein kinase 1 (RIPK1) activity could alleviate CD8+ T-cell infiltration and demyelination in PIS mice. Surgery exacerbates demyelination and worsens neurological function by promoting infiltration of CD8+ T cells and microglia necroptosis, suggesting that modulating interactions of CD8+ T cells and microglia could be a novel therapeutic target of long-term neurological deficits of PIS.

After Surgically Induced Remission, Ileal and Colonic Mucosa-Associated Microbiota Predicts Crohn’s Disease Recurrence

Investigating the tissue-associated microbiota after surgically induced remission may help to understand the mechanisms initiating intestinal inflammation in Crohn's disease. Patients with Crohn's disease undergoing ileocolic resection were prospectively recruited in 6 academic centers. Biopsy samples from the neoterminal ileum, colon, and rectosigmoid were obtained from colonoscopies performed after surgery. Microbial DNA was extracted for 16S rRNA gene sequencing. Microbial diversity and taxonomic differential relative abundance were analyzed. A random forest model was applied to analyze the performance of clinical and microbial features to predict recurrence. A Rutgeerts score ≥i2 was deemed as endoscopic recurrence. A total of 349 postoperative colonoscopies and 944 biopsy samples from 262 patients with Crohn's disease were analyzed. Ileal inflammation accounted for most of the explained variance of the ileal and colonic mucosa-associated microbiota. Samples obtained from 97 patients who were in surgically induced remission at first postoperative colonoscopy who went on to develop endoscopic recurrence at second colonoscopy showed lower diversity and microbial deviations when compared with patients who remained in endoscopic remission. Depletion of genus Anaerostipes and increase of several genera from class Gammaproteobacteria at the 3 biopsy sites increase the risk of further recurrence. Gut microbiome was able to predict future recurrence better than clinical features. Ileal and colonic mucosa-associated microbiome deviations precede development of new-onset ileal inflammation after surgically induced remission and show good predictive performance for future recurrence. These findings suggest that targeted microbial modulation is a plausible modality to prevent postoperative Crohn's disease recurrence.

Primary surgery versus pharmacotherapy for newly diagnosed ileocecal Crohn's disease: a hospital-based cohort study.

Limited knowledge exists regarding the optimal timing and relative advantages of primary surgery compared to medical treatment in ileocecal Crohn's disease (CD). This study aimed to compare long-term outcomes between medication-based treatment versus surgery in newly diagnosed ileocecal CD patients in an Asian population. Among the 885 patients diagnosed with CD and enrolled in the study site hospital cohort between 1980 and 2013, 93 (10.5%) had ileocecal CD. Patients were categorized into either the surgical or medical remission group based on their initial management strategy that led to remission. The rates of relapse, hospitalization, and surgery after achieving remission were compared using Kaplan-Meier curves. The numbers of patients assigned to surgical and medical remission groups were 15 (17.0%) and 73 (83.0%), respectively. The surgical remission group exhibited a lower relapse rate and longer maintenance of remission (10.7 vs. 3.7 yr; p = 0.017) during a median follow-up of 6.6 years. Hospitalization after the first remission tended to be lower in the surgical remission group (p = 0.054). No cases required repeated intestinal resection after the initial surgical remission, whereas a 23% surgery rate was reported at 5 years after initial medical treatment (p = 0.037). In the multivariable analysis, the initial medication-based treatment was significantly associated with relapse (hazard ratio = 3.23, p = 0.039). In selected cases of localized ileocecal CD, ileocolic resection might be a favorable alternative to medication- based treatment, as it demonstrates a lower relapse rate and longer maintenance of remission.

Systematic review: Patient-related, microbial, surgical, and histopathological risk factors for endoscopic post-operative recurrence in patients with Crohn's disease.

Risk stratification for endoscopic post-operative recurrence (ePOR) in Crohn's disease (CD) is required to identify patients who would benefit most from initiation of prophylactic medication and intensive monitoring of recurrence. To assess the current evidence on patient-related, microbial, surgical and histopathological risk factors for ePOR in patients with CD after ileocolic (re-)resection. Multiple online databases (Embase, MEDLINE, Web of Science and Cochrane Library) were searched up to March 2024. Studies with reported associations of patient-related, microbial, surgical and/or histopathological factors for ePOR (i.e., Rutgeerts' score ≥i2 or modified Rutgeerts' score ≥i2a) were included. The risk of bias was assessed with the Newcastle-Ottawa Scale for observational cohort studies and case-control studies. In total, 47 studies were included (four RCTs, 29 cohort studies, 12 case-control studies, one cross-sectional study and one individual participant data meta-analysis) including 6006 patients (median sample size 87 patients [interquartile range 46-170]). Risk of bias assessment revealed a poor quality in 41% of the studies. An association was reported in multiple studies of ePOR with active smoking at and post-surgery, male sex and prior bowel resection. A heterogeneous association with ePOR was reported for other risk factors included in the current guidelines (penetrating disease, perianal disease, younger age, extensive small bowel disease and presence of granulomas in the resection specimen or myenteric plexitis in the resection margin), and other patient-related, microbial, surgical and histopathological factors. Risk factors for ePOR in international guidelines are not consistently reported as risk factors in current literature except for active smoking and prior bowel resection. To develop evidence-based, personalised strategies, large prospective studies are warranted to identify risk factors for ePOR. Validation studies of promising (bio)markers are also required.

Postoperative Crohn's Disease Recurrence Risk and Optimal Biologic Timing After Temporary Diversion Following Ileocolic Resection.

Postoperative recurrence of Crohn's disease (CD) is common. While most patients undergo resection with undiverted anastomosis (UA), some individuals also have creation of an intended temporary diversion (ITD) with an ileostomy followed by ostomy takedown (OT) due to increased risk of anastomotic complications. We assessed the association of diversion with subsequent CD recurrence risk and the influence of biologic prophylaxis timing to prevent recurrence in this population. This was a retrospective cohort study of CD patients who underwent ileocolic resection between 2009 and 2020 at a large quaternary health system. Patients were grouped by continuity status after index resection (primary anastomosis or ITD). The outcomes of the study were radiographic, endoscopic, and surgical recurrence as well as composite recurrence postoperatively (after OT in the ITD group). Propensity score-weighted matching was performed based on risk factors for diversion and recurrence. Multivariable regression and a Cox proportional hazards model adjusting for recurrence risk factors were used to assess association with outcomes. Subgroup analysis in the ITD group was performed to assess the impact of biologic timing relative to OT (no biologic, biologic before OT, after OT) on composite recurrence. A total of 793 CD patients were included (mean age 38 years, body mass index 23.7kg/m2, 52% female, 23% active smoker, 50% penetrating disease). Primary anastomosiswas performed in 67.5% (n = 535) and ITD in 32.5% (n = 258; 79% loop, 21% end) of patients. Diverted patients were more likely to have been males and to have had penetrating and perianal disease, prior biologic use, lower body mass index, and lower preoperative hemoglobin and albumin (all P < .01). After a median follow-up of 44 months, postoperative recurrence was identified in 83.3% patients (radiographic 40.4%, endoscopic 39.5%, surgical 13.3%). After propensity score matching and adjusting for recurrence risk factors, no significant differences were seen between continuity groups in radiographic (adjusted hazard ratio [aHR], 1.32; 95% confidence interval [CI], 0.91-1.91) or endoscopic recurrence (aHR, 1.196; 95% CI, 0.84-1.73), but an increased risk of surgical recurrence was noted in the ITD group (aHR, 1.61; 95% CI, 1.02-2.54). Most (56.1%) ITD patients started biologic prophylaxis after OT, 11.4% before OT, and 32.4% had no postoperative biologic prophylaxis. Biologic prophylaxis in ITD was associated with younger age (P < .001), perianal disease (P = .04), and prior biologic use (P < .001) but not in recurrence (P = .12). Despite higher rates of objective disease activity identified before OT, biologic exposure before OT was not associated with a significant reduction in composite post-OT recurrence compared with starting a biologic after OT (52% vs 70.7%; P = 0.09). Diversion of an ileocolic resection is not consistently associated with a risk of postoperative recurrence and should be performed when clinically appropriate. Patients requiring diversion at time of ileocolic resection are at high risk for recurrence, and biologic initiation prior to stoma reversal may be considered.

The Use of Minimally Invasive Surgery in the Treatment of Crohn's Disease: A Systematic Review of Evidence

Minimally invasive surgery (MIS) is a groundbreaking approach for treating Crohn's disease (CD), affecting approximately 100-300 per 100,000 people. In 2015, an estimated 3.1 million people were diagnosed with Inflammatory Bowel Disease (IBD). Our research aims to consolidate previous evidence on MIS techniques, including laparoscopic techniques and robotic-assisted surgery, and compare them to traditional surgical techniques in managing CD. The practical benefits of MIS are evident in comparative studies, which consistently show that laparoscopic approaches result in shorter hospital stays and faster recovery than open surgery. MIS also demonstrates significant long-term benefits, particularly in reducing the mortality rate. Even pediatric CD patients have shown improved outcomes with laparoscopic-assisted surgery, experiencing fewer postoperative complications and better recovery. MIS applications include Laparoscopic ileocolic resections, a key MIS technique, offer comparable outcomes to other therapies like open ileocolic resection but with the added advantages of lower costs and long-term disease control. This cost-effectiveness of MIS techniques is a significant advantage. Techniques like intracorporeal anastomosis and trans colonic specimen removal have further improved postoperative recovery and cosmesis. Strictureplasty is another MIS technique, is particularly beneficial for CD patients with strictures due to its ability to preserve intestinal length and function. Lastly, laparoscopic robotic-assisted surgery is a game-changer, offering a significant reduction in postoperative pain and faster recovery compared to manual surgeries.

Risk Factors for Microscopic Disease Positivity at Ileocolic Resection Margins for Crohn's Disease.

Interest in microscopic margin positivity during surgical resection of medical-refractory Crohn's disease has been renewed with multiple recent studies showing an association between microscopic margin positivity with disease recurrence. Our aim was to determine risk factors for microscopic margin disease positivity following ileocolic resection (ICR). A prospectively-maintained database of patients with Crohn's disease undergoing ICR at a tertiary-referral center was queried. Margin positivity was defined as the presence of cryptitis, erosion, transmural inflammation with lymphoid aggregates, or architectural distortion at either ileal (proximal) or colonic (distal) margins. Amongst 584 patients, 97 patients had a positive microscopic margin (17%) of which 46% had a positive proximal margin, 17% had a positive distal margin, and 13% had both positive and distal margins. Using multivariable logistic regression analysis, index ICR was associated with less odds of positive margin (odds ratio [OR] 0.46, 95% confidence interval [CI] 0.24-0.89, p=0.02), and granuloma presence was associated with increased odds (OR 2.26, 95% CI 1.23-4.21, p=0.01). We found that repeat ileocolic resection and granuloma presence were predictors of microscopic margin disease.