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Transmural inflammation is not pathognomonic for Crohn's disease of the pouch

Liu, Zhao-xiu; Deroche, Tom; Remzi, Feza H; Hammel, Jefferey P; Fazio, Victor W; Ni, Run-zhou; Goldblum, John R; Shen, Bo
BACKGROUND: Transmural inflammation shown by imaging and histology has been considered a hallmark of Crohn's disease (CD). However, the diagnostic and prognostic value of this feature in CD of the pouch has not been evaluated. This study aimed to evaluate the clinical utility of transmural inflammation in patients with ileal pouch-anal anastomosis (IPAA) using in vivo optical coherence tomography (OCT) and histopathology. METHODS: All the patients were recruited from the subspecialty Pouchitis Clinic. The study consisted of two parts: (1) a prospective study with in vivo through-the-scope OCT for the evaluation of transmural disease in patients with normal or diseased pouches and (2) a retrospective pathology re-review for transmural inflammation in excised pouch specimens of CD and chronic pouchitis. RESULTS: This prospective OCT study enrolled 53 patients: 11 (20.8%) with normal pouches or irritable pouch syndrome, 10 (18.9%) with acute pouchitis, 11 (20.8%) with chronic antibiotic-refractory pouchitis (CARP), and 21 (39.6%) with CD of the pouch. Transmural inflammation, characterized by the loss of layered structure on OCT, was detected in 16 patients (30.2%): 4 with chronic pouchitis and 12 with CD of the pouch. None of the patients with normal pouches, irritable pouch syndrome, or acute pouchitis had transmural disease shown on OCT. Of the 26 patients with pouch failure who had pouch excision, the surgical specimens showed transmural disease in 30% of the CARP patients (3/10) and 12.5% (2/16) of those with CD of the pouch. CONCLUSIONS: Transmural disease in the setting of IPAA is not pathognomonic of CD. Transmural inflammation shown by imaging or histopathology was seen in both CD and CARP. Transmural inflammation of the pouch appeared to be associated with poor pouch outcome.
PMID: 21660630
ISSN: 1432-2218
CID: 2155832

Influence of ileal pouch anal anastomosis on bone loss in ulcerative colitis patients

Navaneethan, Udayakumar; Shen, Ling; Venkatesh, Preethi G K; Hammel, Jeffrey; Patel, Viral; Remzi, Feza H; Kiran, Ravi P
BACKGROUND AND AIM: Patients with ulcerative colitis (UC) are at an increased risk for low bone mineral density (BMD). It is unclear whether proctocolectomy with ileal pouch-anal anastomosis (IPAA) for UC alters the risk of bone loss. The aim of this study was to compare BMD in UC patients with and without IPAA. METHODS: A total of 267 patients with UC and IPAA (study group) were compared to 119 UC patients without IPAA (control group) in this cross-sectional study. The demographic and clinical variables including dual-energy X-ray absorptiometry scan results were compared. Patients were classified as having normal or low BMD, based on the criteria by the International Society for Clinical Densitometry. Univariate and multivariate analyses were performed to assess risk factors associated with low BMD. Age, gender, race, smoking status, steroid use, alcohol use, body mass index, years of absent estrogen protection, use of calcium, vitamin D supplements and disease duration were selected as covariates. RESULTS: 83 (31.1%) had low BMD in the study group vs. 18 (15.1%) in the control group (p=0.001). 2/13 (15.4%) had low BMD before surgery. The mean age of patients in the study and control groups were 44.7 +/- 14.1 vs. 52.4 +/- 17.7 years, respectively (p<0.001). The hip BMD was lower in the study group (0.93 +/- 0.17 g/cm2) than that in the control group (0.98 +/- 0.17 g/cm2) (p=0.038). Fragility fracture was documented in 23 (8.6%) patients in the study group vs. 3 (2.5%) in the control group (p=0.038) Sixty-four (24.0%) of the study group patients were using corticosteroids after surgery in contrast to 93 (78.2%) in the control group (p<0.001). On multivariable analyses, covariate adjusted factors associated with a low BMD in UC patients were advanced age [odds ratio (OR) 1.51 per 5 years; 95% confidence interval [CI], 1.34-1.71], low body mass index (OR=2.37 per 5 kg/m(2) decrease; 95% CI, 1.68-3.36), and the presence of IPAA (OR=6.02; 95% CI, 2.46-14.70). For the 13 IPAA patients who had information available, BMD before IPAA was low. After a median of 46 (Range 7-84) months after IPAA, BMD improved in 7/13 patients (53.8%), while it continued to be low in 6/13 (46.2%) patients. CONCLUSIONS: Low BMD is common in patients with UC. The risk appears to persist even after colectomy and IPAA surgery suggesting that these patients need to be monitored for bone loss.
PMID: 21939915
ISSN: 1876-4479
CID: 2155762

Primary sclerosing cholangitis is associated with endoscopic and histologic inflammation of the distal afferent limb in patients with ileal pouch-anal anastomosis

Shen, Bo; Bennett, Ana E; Navaneethan, Udayakumar; Lian, Lei; Shao, Zhuo; Kiran, Ravi P; Fazio, Victor W; Remzi, Feza H
BACKGROUND: We hypothesized that patients with primary sclerosing cholangitis (PSC) may have a higher risk for prepouch ileitis in the setting of ileal pouch-anal anastomosis (IPAA). The aim of this study was to compare endoscopic and histologic inflammation in the afferent limb (prepouch ileum) and pouch between IPAA patients with and without PSC. METHODS: In all, 39 consecutive inflammatory bowel disease (IBD) and IPAA patients with PSC (study group) were identified and 91 IBD and IPAA patients without PSC (control group) were randomly selected with a 1:2 ratio. Demographic, clinical, endoscopic, and histologic variables were analyzed. RESULTS: There were no significant differences in age, gender, and nonsteroidal antiinflammatory drug use between the study and control groups. Twelve (30.8%) patients in the IPAA-PSC group had coexisting autoimmune disorders, in contrast to five (5.5%) patients in the IPAA control group (P < 0.001). More patients in the study group had endoscopic inflammation as demonstrated by the higher Pouchitis Disease Activity Index (PDAI) endoscopic scores of the afferent limb and pouch body than those in the control group (P = 0.02 and P < 0.001, respectively). In addition, more patients with PSC had higher PDAI histologic scores of the afferent limb than those without PSC (P < 0.001). Multivariate analysis showed higher PDAI endoscopy and histology subscores were associated with risk for PSC, with odds ratio 1.34 (95% confidence interval [CI]: 1.34, 3.79) and 1.61 (95% CI: 1.00, 2.58), respectively. CONCLUSIONS: Concurrent PSC appears to be associated with a significant prepouch ileitis on endoscopy and histology in patients with IPAA. Pouch patients with long segment of ileitis should be evaluated for PSC.
PMID: 21830267
ISSN: 1536-4844
CID: 2155782

Elevated serum IgG4 is associated with chronic antibiotic-refractory pouchitis

Navaneethan, Udayakumar; Venkatesh, Preethi G K; Kapoor, Sumit; Kiran, Ravi P; Remzi, Feza H; Shen, Bo
BACKGROUND AND AIM: We recently reported mucosal infiltration of IgG4-expressing plasma cells in a patient with chronic antibiotic-refractory pouchitis (CARP). The role of serum IgG4 in the pathogenesis and clinical course of ileal pouch disorders has not been investigated. We hypothesized that IgG4-mediated autoimmunity may be a contributing factor in for CARP. The aims of the study were to investigate the prevalence of elevated serum IgG4 in symptomatic patients with ileal pouches and to characterize clinical features of pouch disorders in these patients. METHODS: A total of 124 consecutive symptomatic patients with ileal pouches from our subspecialty Pouchitis Clinic were enrolled in the study from January to October 2010. Serum IgG4 was measured at the time of presentation. Demographic, clinical, and laboratory characteristics were compared between the study (with serum IgG4 >/=112 mg/dl) and control (with serum IgG4 <112 mg/dl) groups. RESULTS: There were ten patients (8.0%) with high serum IgG4 in the study group, while the remaining 114 (92%) patients were in the control group. The prevalence of elevated serum IgG4 in this series was 8%. None of the patients had a confirmed diagnosis of autoimmune pancreatitis. The median serum IgG4 in the study group was 144.5 vs. 14 mg/dl in the control group. The mean age of patients in the study and control groups was 35.5 +/- 14.5 and 42.0 +/- 13.2 years, respectively (p = 0.137). Two patients in the study group (20.0%) had concurrent autoimmune disorders as compared to 19 patients (16.7%) in the control group (p = 0.788). Three (30.0%) patients in the study group had coexisting primary sclerosing cholangitis (PSC) in contrast to 15 (13.2%) in the control group (p = 0.147). Among the study group patients, five (50.0%) had CARP and one (10%) had Crohn's disease (CD) of the pouch, while in the control group, 23 (20.2%) had CARP and 24 (21.1%) patients had CD of the pouch (p = 0.273). CARP was more commonly seen in patients with high serum IgG4 than patients with a normal IgG4 (50.0% vs. 20.2%, p = 0.03). CONCLUSIONS: Approximately 8% of pouch patients presenting with symptoms of pouch dysfunction to our clinic had elevated serum IgG4. Patients with elevated serum IgG4 were more likely to have CARP.
PMID: 21725838
ISSN: 1873-4626
CID: 2155812

Prevalence and clinical implications of positive serum anti-microsomal antibodies in symptomatic patients with ileal pouches

Navaneethan, Udayakumar; Venkatesh, Preethi G K; Manilich, Elena; Kiran, Ravi P; Remzi, Feza H; Shen, Bo
BACKGROUND AND AIM: Autoimmune disorders (AID) have been shown to be associated with chronic antibiotic-refractory pouchitis (CARP). The role of anti-microsomal antibodies in ileal pouch disorders has not been investigated. The aims of the study were to investigate the prevalence of positive anti-microsomal antibody in symptomatic patients with ileal pouches and to investigate its clinical implications. METHODS: A total of 118 consecutive symptomatic patients with ileal pouches were included between January and October 2010. Anti-microsomal antibodies were measured at the time of presentation. Demographic, clinical, and laboratory characteristics were compared between patients with positive and negative anti-microsomal antibody. RESULTS: There were 14 patients (11.9%) with positive serum anti-microsomal antibody. The mean age of patients in the antibody positive and negative groups were 41.8 +/- 14.4 and 42.0 +/- 14.0 years, respectively (p = 0.189). All 14 patients in the antibody positive group (100%) had some form of AID, as compared to 20 patients (19.2%) in the antibody negative group (p < 0.001). Four (28.6%) patients in the antibody positive group had at least one AID in addition to Hashimoto's thyroiditis in contrast to four (3.8%) in the antibody negative group (p = 0.003). In addition, five (35.7%) patients had associated primary sclerosing cholangitis (PSC) in the antibody positive group compared to nine (8.7%) in the antibody negative group (p = 0.012). Eleven patients (78.6%) in the antibody positive group required steroids for treatment of pouch related symptoms in contrast to 26/104 (25%) patients in the antibody negative group (p = 0.002). CONCLUSIONS: Anti-microsomal antibodies were common in pouch patients presenting with symptoms. Patients with positive anti-microsomal antibodies were much more likely to have concurrent AID and PSC. These patients were more likely to require therapy with steroids.
PMID: 21717284
ISSN: 1873-4626
CID: 2155822

Colonic duplication mimicking fistulizing Crohn's colitis [Letter]

Martin, Sean T; Ko, Jennifer S; Plesec, Thomas P; Ananthakrishnan, Lakshmi; Remzi, Feza H
PMID: 21594955
ISSN: 1536-4844
CID: 2155842

Single-port laparoscopic total proctocolectomy with ileal pouch-anal anastomosis: initial operative experience

Geisler, Daniel P; Kirat, Hasan T; Remzi, Feza H
BACKGROUND: Single-port laparoscopic surgery (SPLS) has been used in urologic, gynecologic, general, and colorectal surgery. We herein report our experience with the use of SPLS for total proctocolectomy with ileal pouch-anal anastomosis (RP/IPAA). METHODS: All patients who underwent a RP/IPAA using SPLS between June and September 2009 were identified from a prospectively maintained laparoscopic database. All procedures were performed with the use of a 5-mm Olympus EndoEye and traditional laparoscopic instruments via a SILS port placed at the planned ileostomy site. RESULTS: There were five patients (3 male) included in the study. Median age was 43 years (range=13-47 years). Median body mass index was 20.66 kg/m2 (range=14.63-25.97 kg/m2). Diagnoses included ulcerative colitis (n=4) and familial adenomatous polyposis (n=1). Median ASA score was 2 (range=1-3). Median operative time was 153 min (range=132-278 min). Median estimated blood loss was 100 ml (range=50-200 ml). There were no conversions to either a conventional laparoscopic or an open procedure. Median time to return of bowel function was 2 days. Median length of stay was 4 days (range=3-6 days). Postoperative complications included two patients with partial small-bowel obstructions. Both resolved with conservative management. All patients had their ileostomies closed. CONCLUSION: RP/IPAA using SPLS is a safe technique. Additional studies are needed to compare SPLS to conventional laparoscopy and open surgery with respect to operative times, convalescence, and outcomes.
PMID: 21197548
ISSN: 1432-2218
CID: 2155942

Adenocarcinoma in the ileal pouch: early detection and potential role of fecal DNA methylated markers in surveillance [Letter]

Obusez, Emmanuel C; Liu, Yiding; Bennett, Ana E; Remzi, Feza H; Guo, Baochuan; Shen, Bo
PMID: 20963426
ISSN: 1432-1262
CID: 2155962

Diagnosis and management of afferent limb syndrome in patients with ileal pouch-anal anastomosis

Kirat, Hasan T; Kiran, Ravi P; Remzi, Feza H; Fazio, Victor W; Shen, Bo
BACKGROUND: Distal small bowel obstruction following ileal pouch-anal anastomosis (IPAA) can occur secondary to acute angulation or prolapse of the afferent limb at the pouch inlet, namely, afferent limb syndrome (ALS). The aim of this study is to report our experience in diagnosis and management of ALS in patients with IPAA. METHODS: All patients with ALS after IPAA were identified from prospectively maintained databases. Demographic, clinical, endoscopic, and radiographic features together with its management and outcome were studied. RESULTS: Eighteen patients (12 female) were included. The mean age was 35.6 +/- 14.3 years. Most patients presented with intermittent obstructive symptoms. Fifteen patients were diagnosed by pouch endoscopy with features of angulation of the pouch inlet and difficulty in intubating the afferent limb; 12 patients had kinking or narrowing of the pouch inlet identified with abdominal imaging. The median follow-up was 1.3 (range, 0.14-16.1) years. Nine patients underwent empiric balloon dilatation of the afferent limb/pouch inlet. Of nine, four needed repeat dilatations. One patient with repeat dilatation ultimately had pouch excision; another has been scheduled for surgery after failed repeat dilatations. Eight patients underwent surgery, resection of angulated bowel (n = 3), pouchopexy (n = 2), pouch mobilization with small bowel fixation (n = 1), and pouch excision (n = 2). One patient without symptoms did not receive any therapy despite the finding of ALS on pouchoscopy. CONCLUSIONS: ALS was characterized by clinical presentation of partial small bowel obstruction, which can be diagnosed by careful pouchoscopy and/or abdominal imaging. Endoscopic or surgical intervention is often needed and surgical therapy appears to be more definitive.
PMID: 21560192
ISSN: 1536-4844
CID: 2155852

Management of leak from the tip of the "J" in ileal pouch-anal anastomosis

Kirat, Hasan T; Kiran, Ravi P; Oncel, Mustafa; Shen, Bo; Fazio, Victor W; Remzi, Feza H
BACKGROUND: Diagnosis and management of leak from the tip of the J-pouch after IPAA has not been systematically studied. OBJECTIVE: The aim of this study is to report our experience in the diagnosis and management of these leaks following primary IPAA. DESIGN: This study is a retrospective review of prospectively gathered data. SETTINGS: Data were obtained from a prospectively maintained single-institution pelvic pouch database. PATIENTS: Included in this study were patients with a leak from the tip of the J-pouch after primary IPAA. MAIN OUTCOME MEASURES: The main measures of outcomes after salvage surgery were pouch failure, pouch function, and quality of life. RESULTS: There were 27 (14 male) patients. Median age was 37 years (range, 20-73). Underlying disease in these patients was ulcerative colitis in 22 patients. Predominant symptoms were abdominal pain (n = 15) and fever (n = 5). Twenty patients had either a pelvic abscess detected by CT or MRI or a leak demonstrated at gastrografin enema or pouchoscopy. In 6 patients, the diagnosis was only made at salvage surgery. In 1 patient, the leak-associated abscess was detected during emergent laparotomy for acute peritonitis before salvage surgery. Of 27 patients, 1 had successful CT-guided drainage without the need for further surgery. Another patient had pouch resection with end ileostomy. Salvage surgery was performed in 25 patients by means of pouch repair (n = 23) and new pouch creation (n = 2); 8 patients had a repeat anastomosis. Median time from primary IPAA to salvage surgery was 0.9 years (0.13-9.8). Twenty-four patients with salvage surgery have a functioning pouch after a mean follow-up of 3.2 +/- 1.9 years. LIMITATIONS: : The study was limited by its retrospective nature. CONCLUSIONS: Leak from the tip of the J-pouch is indolent and diagnosis can be difficult. Satisfactory outcomes in terms of pouch retention may be expected after appropriate surgical management.
PMID: 21383566
ISSN: 1530-0358
CID: 2155862