SSAT Abstracts wound (AOR: 0.44, CI: 0.22-0.86, P=0.01). Patients who had dirty/infected wounds had 45% reduction in SSSI using NPWT (AOR: 0.55, CI: 0.38-0.51, P<0.01). Conclusion: There is a steady observed increase in use of Negative Pressure Wound Treatment in colorectal surgery. Overall, NPWT is associated with significant decrease in SSSI risk in colorectal surgery, especially in contaminated wounds. Tu2055 FACTORS ASSOCIATED WITH WORSE OUTCOMES FOR COLORECTAL CARCINOIDS IN RADICAL VERSUS LOCAL RESECTIONS Osayande Osagiede, Elizabeth B. Habermann, Courtney Day, Dorin Colibaseanu Background: Carcinoids are the most common neuroendocrine tumors of the gastrointestinal tract. Advances in screening endoscopy have resulted in increased detection and thus inci- dence of colorectal carcinoids. Due to the rarity of these tumors, colorectal carcinoids are understudied and are not clearly understood. Our study sought to identify the factors associated with worse outcomes for colorectal carcinoids following resection. Methods: We conducted a retrospective cohort study using the National Cancer Data Base. We identified patients diagnosed with colorectal carcinoids (2004 – 2014) who underwent resection from the National Cancer Data Base. Non-carcinoid colorectal tumors were excluded. Patient demographics, treatment and tumor characteristics were analyzed. Overall survival was evaluated using the Kaplan Meier method. Cox proportional hazards and logistic regression models were used to assess factors associated with radical versus local resection, overall survival and LOS. Results: A total of 7,967 colon and 11,929 rectal carcinoids were identified and analyzed. The median age at diagnosis was 58 y and 54 y for colon and rectal carcinoids respectively. The majority of colon (93.4%) and rectal (89.1%) carcinoids underwent radical and local resection respectively (Table 1). The 5-year overall survival was 69% and 92% for colon and rectal carcinoids respectively. On multivariate analysis, older patients (OR 1.45, CI 1.37-1.53) and those with clinical stage 4 disease (OR 9.91, CI 4.56-21.52) were associated with higher odds for colonic radical resection. Lowest median income quartile (OR 1.41, CI 1.21-1.64) and black patients (OR 1.26, CI 1.07-1.49) experienced worse survival outcomes for colon and rectal carcinoids respectively (Table 2). Conclusions: The majority of colon carcinoid patients undergo radical resection. This is likely attributable to larger tumor size, earlier nodal involvement or metastasis, and poorer histologic differentiation of colon carcinoids. This observed aggressiveness may also explain the poorer prognosis generated by colon carcinoids compared to patients with rectal carcinoids. Socially deprived individuals such as racial minority and low income patients experience worse outcomes for colorectal carcinoids following resection. Table 1: Demographics and Clinical Characteristics among carcinoid tumors Table 2: Multivariable Cox Proportional Hazards Regression Analysis of Factors Associ- ated with Death among Carcinoid Tumors S-1602 SSAT Abstracts Tu2056 ELECTIVE SUBTOTAL COLECTOMY RESULTS IN HIGHER COMPLICATION RATES COMPARED TO SEGMENTAL COLECTOMY Peige Zhou, Megan Aadland, Sarah Bell, Paolo Goffredo, Jennifer Hrabe, Muneera Kapadia, Imran Hassan, John Cromwell, Irena Gribovskaja-Rupp Introduction There is limited data on the difference of the post-operative course in patients undergoing segmental colectomy compared to subtotal abdominal colectomy. To our know- ledge, this is the first large study comparing outcomes between segmental and subtotal colectomy. This is crucial for patient counseling, perioperative care, and prevention of complications. Methods Participant use file from the 2013-2017 American College of Sur- geons-National Surgical Quality Improvement Program (ACS-NSQIP) database was queried. Adult (>18 years) patients who underwent elective colectomy (excluding rectal resections) were included in analysis. Patient characteristics, surgical procedure, peri-operative care, and 30 day outcomes were compared between those who underwent segmental colectomy versus subtotal colectomy with or without anastomosis. Univariate and multivariate regression analyses were performed, and outcomes were compared over time. Results There were 91,207 patients identified with 51% female, 86% Caucasian, and median age 62 years (range 18-90); 96% underwent segmental colectomy and 4% subtotal colectomy. In segmental colectomy, indication was more commonly for cancer and diverticulitis (52% and 26% versus 29% and 6%); whereas in subtotal colectomy, it was inflammatory bowel disease (49% versus 7%, all p < 0.01). There was no difference between American Society of Anesthesiologists (ASA) score for patients undergoing segmental versus subtotal colectomy. Patients undergoing subtotal colectomies tended to be younger (median age 51 versus 62 years). When accounting for indication differences (as well as age, gender, comorbidities, etc.) in multivariate analysis of outcome, several trends persisted. There were no differences in rates of surgical site infections, anastomotic leak, and urinary tract infections. However, subtotal colectomy was associated with increased rates of sepsis (odds ratio 1.48), ileus (2.21), pneumonia (1.65), DVT/PE (2.10), reoperation (1.47), readmission (1.47), and length of stay (1.16, all p<0.01). Increased operative time for each additional 60 minutes also added modest increase to complication rates. These trends were stable over time except length of stay, which decreased slightly. Minimally invasive approach (MIS), non-smoking, stable weight, and use of mechanical bowel prep (MBP) and oral antibiotics (OA) were associated with reduced complications (all p<0.01). Conclusions Subtotal colectomy is associated with higher rate of complications compared with segmental colectomy. The biggest differences are in rates of pneumonia, DVT/PE, and ileus, followed by sepsis, readmission, and reoperation. Preoperative optimization of patients (smoking cessation, nutrition optimi- zation, use of MBP/OA, and MIS) are important in patients undergoing colectomies as they minimize complications. Tu2058 INFLUENCE OF OBESITY ON MORBIDITY AND MORTALITY IN COMPLICATED DIVERTICULAR DISEASE Federico B. Roesch Dietlen, Elba J. Barrios-Hernandez, Luis A. Angulo-Flores, Miguel A. Carrasco Arroniz, Juan C. Castellanos-Juarez, Fernando Diaz-Roesch, Arturo Triana- Romero, Margarita Jiménez-Paxtian, Jose M. Remes-Troche Introduction: Colon diverticular disease (CCD) is a common entity that affects one-third of the over 45-year-old population; approximately 10% to 25% will develop complications, and 25% will require emergency surgery with high morbidity and mortality. Since 1980, there has been an important increase of obesity in several countries, actually, Mexico is the second place worldwide of adult obesity. Thus, a large number of overweight and obese patients with CCD are more prone to require emergency surgery and they are in risk of suffering some of its complications. Objective: To explore the influence of obesity in the postoperative morbidity and mortality in CDD. Methods: Study design: retrospective, multicentric, observational and comparative. Universe: Patients with CCD treated in Vera- cruz’s hospitals from January 2015 to May 2018. Patients were classified into 4 groups according to the WHO criteria to classify body fatness, considering the BMI. Analyzed variables: Age, gender, postoperative complications and mortality. Statistical analysis: Results were analyzed using descriptive, central tendency statistics and odds ratio (OR) with SPSS 22.0. Results: 111 clinical files were analyzed, male gender stated for 53% (n=59), average age was 60.4±12.1 years old (range [32-87]), mean BMI was 28.6±5.8 (range [16.6- 62.5]). 1.8% were underweight, 17.1% normal range, 50.5% overweight and 30.6% were obese. Prevalence of comorbidities was 61.3% (1.48 OR for obesity group), the most prevalent was T2D with 38.7%, arterial hypertension in 29.7% and 4.5% had ischemic heart disease. The OR for each one was 1.96, 1.19 and 3.62 respectively in obesity group. The incidence of complications was 36% (n=40), with a 1.14 OR in obesity group; the incidence of each complication according to BMI are summarized in Table 1. In the risks analysis, the highest OR for obesity in complications were 3.91 OR for evisceration, 3.62 OR for residual abscess and 2.3 OR for pulmonary embolism. Table 2 contains the rest of OR in complications. 5