Faculty Bibliography

BACKGROUND AND AIMS: Efferent limb syndrome (ELS) after S pouch and pouch-rectal anastomosis (PRA) after J pouch are common anatomical problems after restorative proctocolectomy that lead to pouch outlet obstruction. This study was aimed to evaluate the frequency, diagnosis and management of ELS and PRA. METHODS: Consecutive patients diagnosed with ELS or PRA at our Pouch Center from 2002 to 2011 were included. Demographic, clinical, endoscopic, and radiographic features together with its management and outcomes were studied. RESULTS: A total of 26 patients met the inclusion criteria, 17 (65.4%) were male. Eleven patients (42.3%) had ELS and 15 (57.7%) had PRA. The median length of the efferent limb/rectal stump for all patients was 6.0 (interquartile range [IQR]: 5.0-8.8) cm, 7.0 (IQR: 5.0-9.0) cm and 6.0 (IQR: 5.0-10.5) cm for S and J pouch patients, respectively (P=0.025). Dyschezia (n=15, 57.7%) was the most common presenting symptom, followed by bloating (n=9, 34.6%), abdominal pain (n=9, 34.6%), the sense of incomplete evacuation (n=7, 26.9%) and perianal discomfort (n=3, 11.5%). A greater number of patients in the ELS group had dyschezia compared to the PRA group (90.9% vs. 33.3%, P=0.005). More patients in the ELS group had a sense of incomplete evacuation than those in the PRA group (45.5% vs. 13.3%, P=0.10). Ten patients (90.9%) in the ELS group and 5 patients in the PRA group (33.3%) required surgical intervention (P=0.005). After a mean follow-up of 3.4 +/- 1.4 years, 7 (87.5%) of the 8 patients, who underwent redo pouch construction with efferent limb/rectal stump excision, maintained a functional pouch. CONCLUSIONS: Patients with ELS or PRA often presented with debilitating symptoms. ELS occurred more frequently in S pouch patients than PRA in J pouch patients. Surgical intervention might be needed, especially for the ELS patients.

BACKGROUND: After IPAA, the timing, management, and outcome of pouch-vaginal fistulas are poorly defined. OBJECTIVE: The purpose of this study was to evaluate the frequency, management, and outcome of patients who develop a pouch-vaginal fistula. DESIGN: This was a retrospective analysis of a prospectively maintained database. SETTINGS: The study was conducted in a single-center, high-volume tertiary referral colorectal unit. PATIENTS: Women with a pouch-vaginal fistula after IPAA from 1983 to 2010 were included in the study. MAIN OUTCOME MEASURES: The healing rate of pouch-vaginal fistulas was measured. RESULTS: Of 152 patients with a pouch-vaginal fistula after IPAA, 59 fistulas occurred at <12 months, constituting the early onset group, and 43 occurred at >12 months, constituting the late-onset group. Seventy-five patients (77.3%) underwent local repair (48 (49.5%) had ileal pouch advancement flap and 27 (27.8%) had transvaginal repair). The healing rate after ileal pouch advancement flap performed as a primary procedure was 42% and 66% when performed secondarily after a different procedure. The healing rate for transvaginal repair was 55% when done as a primary procedure and 40% when performed secondarily. Nineteen patients underwent redo ileal pouch construction, with an overall pouch retention rate of 40%. At median follow-up of 83 months (range, 5-480 months), 56 (57.7%) of the 102 patients had healed the pouch-vaginal fistula, whereas pouch failure occurred in 34 women (35%, 12 early onset and 22 late onset). Healing of the fistula was significantly lower (22% versus 73%; p < 0.001) and pouch failure higher (52.7% versus 22.7%, p < 0.001) when compared with Crohn's disease. On multivariate analysis, a postoperative delayed diagnosis of Crohn's disease was associated with failure (p = 0.01). No other factors were associated with pouch failure. LIMITATIONS: This was a retrospective study. CONCLUSIONS: Pouch-vaginal fistula after IPAA surgery is indolent and may persist after repairs. A delayed diagnosis of Crohn's disease is associated with a poor outcome and a higher chance of pouch failure.

BACKGROUND: Data regarding the long-term outcomes of restorative proctocolectomy and ileal pouch anal anastomosis including pouch function and quality of life in the pediatric population are limited in pediatric patients. STUDY DESIGN: Indications for surgery, complications, long-term function, and quality of life were evaluated in pediatric patients undergoing ileal pouch anal anastomosis. Assessment of quality of life was performed using the Cleveland Global Quality of Life score. RESULTS: There were 433 patients with a mean age of 18.04 +/- 2.9 years. Final pathologic diagnoses were ulcerative colitis or indeterminate colitis (78.3%), familial adenomatous polyposis (15.7%), Crohn's disease (5.1%), and others (0.9%). There were 237 patients (54.7%) who underwent total proctocolectomy and ileal pouch anal anastomosis; 196 (45.3%) underwent initial subtotal colectomy followed by completion proctectomy with ileal pouch anal anastomosis. Anastomosis was stapled in 352 patients (81.3%) and hand-sewn in 81 (18.7%) patients. Mean follow-up was 108.5 +/- 78.4 months. At the most recent follow-up, mean Cleveland Global Quality of Life score was 0.8 +/- 0.2 and numbers of daytime and night-time bowel movements were 5.3 +/- 3.1 and 1.6 +/- 1.3, respectively. The majority of the patients (86.8%) were fully continent or only complained of rare incontinence. Most patients had no seepage (day, 84.3%; night, 72.4%) and did not wear any pads (day, 89.3%; night, 84.3%). Most denied dietary (71.3%), social (84.8%), work (85.7%), or sexual restrictions (87.6%) at the time of last follow-up. There were 92.7% of patients who said they would undergo ileal pouch anal anastomosis again and 95.2% would recommend surgery to others. CONCLUSIONS: Restorative proctocolectomy with ileal pouch anal anastomosis can be performed in pediatric patients with acceptable morbidity and is associated with good long-term results in terms of gastrointestinal function, quality of life, and patient satisfaction.

OBJECTIVE: To evaluate the influence of preoperative dysplasia grade, appearance, and site on risk and location of cancer in patients with colitis. BACKGROUND: The ability to predict the presence and location of cancer in colitis patients with dysplasia is essential to facilitate recommendations regarding the necessity and type of surgery. METHODS: Ulcerative and indeterminate colitis patients who underwent proctocolectomy for dysplasia were retrospectively selected. Patient characteristics and findings at colonoscopic surveillance were associated with findings on the surgical specimen by regression analysis. RESULTS: From 1984 to 2007, 348 proctocolectomy specimens with preoperative dysplasia showed cancer in 51 (15%) and dysplasia in 172 (49%) cases. Patients with preoperative high-grade dysplasia (HGD) had cancer in 29% compared with 3% in low-grade dysplasia (LGD) (P < 0.001). Patients with preoperative dysplasia-associated lesion/mass (DALM) had cancer in 25% compared with 8% in flat dysplasia (P < 0.001). In LGD with DALM, the risk of cancer was not significantly higher than in flat LGD (7% vs 2%, P = 0.3), but risk of cancer or HGD was higher with a threefold increase (29% vs 9%, P = 0.015). On multivariate analysis, HGD, DALM, and disease duration were independent risk factors for postoperative cancer. In patients with isolated colonic dysplasia above the sigmoid level, postoperative rectal involvement was limited. CONCLUSIONS: Risk of cancer for patients with HGD or DALM is substantial. Despite low risk of cancer in patients with flat LGD, threshold for surgery should be low given the high prevalence of postoperative pathologic findings. Only in selected cases, colonoscopic surveillance after discussion of associated risks may be acceptable, provided high patient compliance can be assured. Surgery should be considered in all other cases, because it is the only modality that can eliminate the risk of cancer. The location of preoperative dysplasia may allow for the clarification of the need for proctectomy especially in the poor risk surgical patient.

BACKGROUND: It is still unknown to what extent the reported morbidity and recovery benefits of laparoscopic total abdominal colectomy (TAC) for severe ulcerative colitis (UC) are associated with patient selection bias. This study aimed to evaluate whether laparoscopic TAC has any advantages over open surgery after control for perioperative confounding factors. METHODS: Patients undergoing TAC for UC during 2006-2010 were identified. Demographics, disease characteristics, and perioperative outcomes were compared between laparoscopic and open TAC. Postoperative recovery and 30-day complications were further assessed by covariate-adjusted multivariate regression models. The outcomes of different laparoscopic techniques were compared. A subgroup analysis including surgeons who routinely used both laparoscopic and open techniques was also performed. RESULTS: Of the 412 eligible patients, the 197 patients undergoing laparoscopic TAC were significantly younger and had a decreased Charlson Comorbidity Index and ASA score, increased hemoglobin and serum albumin levels, and a smaller proportion of extensive colitis and urgent cases. Unadjusted analyses showed that intraoperative morbidity, postoperative mortality, and rates for readmission and reoperation were similar. Laparoscopic TAC was associated with a longer operative time but a decrease in blood loss, overall morbidity, ileus, and thromboembolism, as well as a faster return to bowel function and a shorter hospital stay. After covariate adjustments, laparoscopic surgery remained associated with a reduction in the time to stoma function, incidence of postoperative ileus, and hospital stay compared with open TAC. The rates of postoperative morbidity, readmission, and reoperation did not differ regardless whether the conventional multitrocar technique, hand-assisted procedure, or single-incision technique was used. Laparoscopic TAC among surgeons using both open and laparoscopic techniques was associated with recovery benefits similar to those observed in the overall study population. CONCLUSION: The data suggest that laparoscopic TAC retains recovery advantages over open surgery even after adjustments for confounders.

BACKGROUND: Data on the association between ileal pouch retention and clinical characteristics of pouch Crohn's disease developing after restorative proctocolectomy for ulcerative colitis are still limited. OBJECTIVE: The aim of this study was to identify whether clinical features of pouch Crohn's disease are associated with pouch retention. SETTINGS: The study was conducted in a tertiary referral center. DESIGN AND PATIENTS: All patients diagnosed with clinically active pouch Crohn's disease during follow-up after IPAA for ulcerative colitis or indeterminate colitis were identified from an ileal pouch registry. The definition of early vs late diagnosis was based on the median time interval to diagnosis of Crohn's disease after pouch creation. The associations between pouch retention and the clinical features and treatments of pouch Crohn's disease were analyzed. OUTCOME MEASURE: The long-term pouch retention rate was estimated by using the Kaplan-Meier method. Multivariate logistic regression was used to analyze independent factors for pouch failure. RESULTS: From 1993 to 2009, a total of 65 (28 males) patients developed de novo pouch Crohn's disease during a mean 7.9 years of follow-up after pouch creation. The overall pouch retention rate was 57%. The median time from pouch creation to pouch Crohn's disease diagnosis was 3.6 years. Univariate analysis demonstrated that early diagnosis of pouch Crohn's disease, disease location, and clinical manifestations at the time of diagnosis were associated with pouch outcomes, whereas medical therapy or perianal surgery was not. Multivariate analysis showed that fistula at the time of diagnosis (OR = 17.5, p = 0.002) and early diagnosis (OR = 5.70, p = 0.011) were independent risk factors for pouch failure, whereas afferent limb disease was associated with pouch retention (OR = 0.07, p = 0.018). LIMITATIONS: The retrospective nature of this study and referral bias were limitations. CONCLUSIONS: Disease characteristics of de novo pouch Crohn's disease heavily influence pouch retention. The interval from pouch construction, fistulizing disease, and disease location can be used as prognostic indicators when ileal pouch Crohn's disease is diagnosed.

BACKGROUND: Whether preoperative biological therapy increases postoperative complications after restorative proctocolectomy remains controversial. OBJECTIVE: This study aims to evaluate the influence of preoperative use of biologics on outcomes after restorative proctocolectomy and to assess whether a staged approach modifies any negative influence of these medications. SETTING: The study was conducted at a single tertiary institution. DESIGN AND PATIENTS: Patients who were operated on for medically refractory ulcerative or indeterminate colitis were identified and classified by initial surgery, whether subtotal colectomy or total proctocolectomy, then categorized into biologics user and nonuser groups. Demographics, perioperative data, postoperative complications, pouch function, and quality of life were collected. OUTCOME MEASURE: Cumulative 1-year complication rates were estimated by using the Kaplan-Meier curve, and independent predictors for infectious complications were identified by using Cox proportional hazards regression models. RESULTS: From 2006 to 2010, 407 and 181 patients underwent initial subtotal colectomy with end ileostomy or total proctocolectomy with IPAA. For the 181 patients who underwent total proctocolectomy straightaway, pre- and perioperative data were comparable for biologics users (n = 25) and nonusers (n = 156). Cumulative 1-year pelvic sepsis rate was significantly greater in patients on biologics (32% vs 16%, p = 0.012). Multivariate analysis demonstrated that preoperative anti-tumor necrosis factor therapy (HR, 2.62; p = 0.027) was an independent risk factor for postoperative pelvic sepsis after total proctocolectomy. After subtotal colectomy, no differences occurred in both 30-day and cumulative 1-year postoperative complications between biologics users (n = 142) and nonusers (n = 265). Outcomes were also similar when biologics users (n = 88) and nonusers (n = 164) underwent subsequent completion proctectomy with ileal pouch creation after initial colectomy. LIMITATIONS: The retrospective nature of this study and physician's preference were limitations. CONCLUSIONS: Preoperative exposure to biologics is associated with an increased risk of pelvic sepsis after total proctocolectomy with IPAA. This risk is mitigated by the performance of an initial subtotal colectomy.

BACKGROUND: There is no consensus on the need for and the interval of surveillance pouchoscopy in asymptomatic ileal pouch patients with underlying ulcerative colitis (UC). The purpose of this study was to evaluate the likelihood of finding dysplasia or incidental ileal pouch disorders in asymptomatic patients undergoing surveillance pouchoscopy. METHODS: This study included all eligible consecutive asymptomatic UC patients undergoing surveillance pouchoscopy to our subspecialty Pouchitis Clinic from 2002 to 2011. Univariable and multivariable analyses were performed. RESULTS: A total of 138 patients met the inclusion criteria, with 72 (52.2 %) being male. The mean age at pouch construction was 45.4 +/- 15.0 years, and the mean interval from ileostomy closure to the inception of first surveillance pouchoscopy was 89.4 +/- 78.8 months. One patient was found to have indefinite for dysplasia on pouch body mucosal biopsy (0.7 %), and two patients had non-caseating granulomas, suggesting Crohn's disease (CD) of the pouch. Of the 138 patients, 69 (50 %) had abnormal endoscopic findings, 102 (73.9 %) had acute and/or chronic inflammation on histology, and 62 (44.9 %) had both abnormal endoscopy and histology. The abnormal endoscopic findings included isolated pouch ulcer (n = 29, 21 %), active pouchitis (n = 31, 22.5 %), inflammatory polyps (n = 10, 7.2 %), strictures at the anastomosis (n = 5, 3.6 %), inlet (n = 10, 7.2 %) or outlet (n = 2, 1.4 %). Thirteen patients (13/17, 76.5 %) with pouch strictures underwent endoscopic balloon dilatation therapy and nine had (9/10, 90 %) endoscopic polypectomy. Multivariable analysis showed that patients with a preoperative diagnosis of CD and concomitant extraintestinal manifestations had a higher risk for abnormal pouch endoscopic findings with odds ratios of 2.552 (95 % confidence interval [CI] 1.108-16.545, p = 0.035) and 4.281 (95 % CI 1.204-5.409, p = 0.014), respectively. CONCLUSIONS: Dysplasia was rare in asymptomatic patients with restorative proctocolectomy who underwent surveillance pouchoscopy in this cross-sectional study. However, "incidental" abnormal endoscopic and/or histologic findings were common, which often needed endoscopic therapeutic intervention.

BACKGROUND: Intraoperative colonoscopy is sometimes needed as an adjunct to colorectal surgery. When it is performed with laparoscopic surgery, there is the potential for prolonged bowel distension, obstructed surgical exposure, and increased morbidity. This study aimed to evaluate the overall safety and outcomes of laparoscopic colorectal procedures in which intraoperative colonoscopy was performed. METHODS: The study group consisted of patients who underwent intraoperative colonoscopy during laparoscopic intestinal resection at our institution between 1995 and 2011. They were individually matched for a number of factors including age, gender, diagnosis, American Society of Anesthesiologists (ASA) physical status score, and type of surgical procedure with a cohort of patients who underwent laparoscopic intestinal resection with no intraoperative colonoscopy during the same period. Early postoperative outcomes and time to flatus and first bowel movement were compared. RESULTS: For the study, 30 patients (18 females) and 30 matched control subjects were identified. The study and control groups did not differ in terms of operating time (132 vs 151 min; p = 0.5), estimated blood loss (216 vs 212 ml; p = 0.9), conversion to open surgery (n = 1 vs 5; p = 0.2), time to first flatus (3 vs 4 days; p = 0.4), time to first bowel movement (4 vs 4 days; p = 0.4), reoperation (n = 0 vs 1; p = 1), length of hospital stay (6 vs 9 days; p = 0.3), overall morbidity (n = 10 vs 14; p = 0.4), or readmission (n = 0 vs 1; p = 1). The complications that developed during or after surgery were similar in the two groups. No colonoscopy-related complications or deaths occurred. CONCLUSIONS: Intraoperative colonoscopy does not complicate the application and outcomes of laparoscopic intestinal resection. Surgeons should perform an intraoperative colonoscopy when it is indicated during laparoscopic surgery.