Intriguing Role of the Mesentery in Ileocolic Crohn's Disease.

Crohn's disease (CD) is a chronic relapsing inflammatory bowel disease with unknown etiology. Up to 80% of patients will eventually require surgery throughout their lifetime, and often repeated resections are required for disease recurrence. Observations of "creeping fat" surrounding the diseased intestine renewed interest in the mesentery, recently defined as an organ with endocrine and immune functions. According to the inside-out model, the mesentery may be primarily affected in CD and subsequent cause alterations in the mucosa. Recently, lower surgical recurrence rates have been reported with en-bloc excision of the mesentery adjoining the diseased intestine. Results of ongoing randomized controlled trials may clarify the role of the mesentery in CD and possibly lead to its adoption as standard during surgery for Crohn's disease.

Negative-pressure wound therapy after stoma reversal in colorectal surgery: a randomized controlled trial.

BACKGROUND: Stoma-reversal surgery is associated with high postoperative morbidity, including wound complications and surgical-site infections (SSIs). This study aims to assess whether the application of negative-pressure wound therapy (NPWT) can improve wound healing compared with conventional wound dressing. METHODS: This was a single-centre, superiority, open-label, parallel, individually randomized controlled trial. Patients undergoing stoma reversal were randomized (1 : 1) to receive NPWT or conventional wound dressing. The primary endpoint of the study was the rate of wound complications and SSIs after stoma closure. The secondary endpoints were postoperative wound pain, rate of wound healing after 30 days from stoma closure, and wound aesthetic satisfaction. RESULTS: Between June 2019 and January 2021, 50 patients were allocated to the NPWT group (all received NPWT, 49 were analysed); 50 patients were allocated to the conventional wound dressing group (48 received the treatment, 45 were analysed). No significant difference was found in wound-complication rate (10 per cent NPWT versus 16 per cent controls; odds ratio 0.61 (95 per cent c.i. 0.18 to 2.10), P = 0.542) and incisional SSI rate (8 per cent NPWT versus 7 per cent controls; odds ratio 1.24 (95 per cent c.i. 0.26 to 5.99), P = 1.000). The NPWT group showed less pain, higher aesthetic satisfaction (P < 0.0001), and a higher proportion of wound healing (92 versus 78 per cent; P = 0.081) compared with the control group. CONCLUSION: NPWT does not reduce the incidence of SSI after stoma-reversal surgery compared with conventional wound dressing. However, NPWT improved the healing of uninfected wounds, reduced wound pain and led to better aesthetic outcomes.Registration number: NCT037812016 (clinicaltrials.gov).

Visceral adiposity but not subcutaneous fat associated with improved outcome of patients with acute cholecystitis.

BACKGROUND: The aim of this study to study the effect of visceral and subcutaneous fat tissue mass on short- and long-term prognosis of patients with acute calculus cholecystitis (ACC). METHODS: Retrospective analysis of medical records. Included were all patients admitted because of ACC. Computed tomography images at the level of L3 were analyzed for body composition using designated software (Slice-O-matic; TomoVision, Montreal, Quebec, Canada). General linear model was used to analyze the effect of body composition on length of hospital stay, and Cox regression analysis was used to ascertain the effect of the different parameters on 1-y survival. RESULTS: Included were 159 patients (mean age: 71.7 ± 15.8 y, 54.7% males). Fat was the most abundant tissue (401 ± 175 cm2 of the computed tomography slices surface area), and visceral fat was 45.8 ± 14.1% of the fat area measured. Using the general linear model, we found that American Society of Anesthesiologists score, disease severity index, and age were positively associated with higher length of stay, whereas high visceral fat was associated with lower length of stay (estimated marginal means at 7.4 ± 1.4 d compared to 12.7 ± 1.4 d among patients with lower visceral fat surface area, P = 0.010). The Cox regression model showed that 1-y survival risk was significantly reduced by age, the Charlson Comorbidity Index and high muscle mass. High visceral adiposity was associated with improved survival (odds ratio: 0.216, 95% confidence interval: 0.064-0.724, P = 0.013). Subcutaneous adiposity did not affect prognosis. CONCLUSIONS: Visceral adiposity is associated with shorter length of stay and improved 1-y survival among patients hospitalized with ACC.