The American Society for Gastrointestinal Endoscopy (ASGE) diagnostic algorithm for obscure gastrointestinal bleeding: eight burning questions from everyday clinical practice

The Role of Endoscopy in the Diagnosis and Management of Small Bowel Pathology in Children

Small bowel evaluation has been transformed by capsule endoscopy and advances in small bowel imaging, which provide reliable and noninvasive means for assessing the mucosal surface. Device-assisted enteroscopy has been critical for histopathological confirmation and endoscopic therapy for a wide range of small bowel pathology that conventional endoscopy cannot reach. The purpose of this review is to provide a comprehensive overview of the indications, techniques, and clinical applications of capsule endoscopy; device-assisted enteroscopy; and imaging studies for small bowel evaluation in children.

Effect of small bowel transit time on accuracy of video capsule endoscopy in evaluating suspected small bowel bleeding

BACKGROUND

Obscure small bowel bleeding is defined as gastrointestinal bleeding (GIB) that is unidentifiable with esophagogastroduodenoscopy and a colonoscopy with video capsule endoscopy (VCE) being the next gold standard step for evaluation. Small bowel transit time (SBTT) is a metric of a VCE study that is defined as the time the capsule takes to travel through the small intestine.

AIM

To determine if SBTT within the VCE study, correlates to overall detection of obscure small bowel bleeds. Furthermore, we attempted to identify any existing correlation between SBTT and re-bleeding after a negative VCE study.

METHODS

This is a single center retrospective analysis of VCE studies performed for overt and occult GIB at Einstein Medical Center, Philadelphia, between 2015 and 2019. Inclusion criteria primarily consisted of patients 18 years or older who had a VCE study done as part of the workup for a GIB. Patients with incomplete VCEs, poor preparation, or with less than 6 mo of follow up were excluded. A re-bleeding event was defined either as overt or occult within a 6-mo timeframe. Overt re-bleeding was defined as Visible melena or hematochezia with > 2 gm/dL drop in hemoglobin defined an overt re-bleeding event; whereas an unexplained > 2 gm/dL drop in hemoglobin with no visible bleeding defined an occult re-bleed.

RESULTS

Results indicated that there was a significant and positive point biserial correlation between SBTT of 220 min and detection of a bleeding focus with a statistically significant p value of 0.008. However, the area under the curve was negligible when trying to identify a threshold time for SBTT to discriminate between risk of re-bleeding events after a negative VCE.

CONCLUSION

In terms of SBTT and association with accuracy of VCE finding a bleeding focus, 220 min was found to be adequate transit time to accurately find a bleeding focus, when present. It was found that no threshold SBTT could be identified to help predict re-bleeding after a negative VCE.

Acute Gastrointestinal Bleeding

Acute gastrointestinal bleeding (GIB) is a common clinical entity. Expert management of acute GIB requires collaborative care between internists and other specialists. This article reviews the presentation, treatment, and prevention of acute GIB using recommendations from recent guidelines and expert panel reviews. The article acknowledges the pivotal role played by primary care providers in the inpatient and outpatient management of acute GIB.

The role of early video capsule endoscopy in the diagnosis and prognosis of obscure gastrointestinal bleeding: A multi-center propensity score matching study

BACKGROUND AND AIM

Video capsule endoscopy (VCE) is a first-line procedure for the diagnosis of obscure gastrointestinal bleeding (OGIB). The opinions on the timing for such diagnostic evaluation remain unclear. We aimed to explore the role of early VCE in OGIB patients.

METHODS

A total of 997 patients that underwent VCE at Renji Hospital and Nagoya University from May 15, 2002, to December 28, 2016, were included in this study. We matched patients that underwent early VCE within 14 days of bleeding (early group, n = 678) to patients that did not (late group, n = 319) via 1:1 propensity score matching (PSM). We then compared VCE diagnostic rates and the prevalence of post-VCE rebleeding in patients with initial negative VCE findings within 1 year between these groups before and after PSM.

RESULTS

Following PSM, early VCE was associated with a significantly higher rate of OGIB diagnosis (56.4% vs 45.5%, P = 0.001) and with a significantly lower incidence of rebleeding within 1 year following treatment (24.7% vs 36.7%, P = 0.041). In univariate and multivariate analyses, VCE timing (odds ratio 0.648; 95% confidence interval 0.496-0.847, P = 0.001 and odds ratio 0.666; 95% confidence interval 0.496-0.894, P = 0.007, respectively) was found to be linked with a higher rate of positive findings.

CONCLUSION

Early VCE can improve the reliability of OGIB diagnosis while also reducing rates of post-VCE rebleeding. This suggests that timely and accurate diagnosis can help to improve OGIB patient treatment and prognosis.

A case report of endovascular management of delayed upper gastrointestinal bleeding after open esophagectomy for a benign esophageal stricture

INTRODUCTION

Delayed upper gastrointestinal (GI) bleeding is a rare complication of esophagectomy and can be difficult to manage.

PRESENTATION

A 76-year-old female represented 17 days post open esophagectomy with an unstable upper GI bleed. When control could not be achieved endoscopically, she was transferred to the Radiology Department where a triphasic CT angiogram confirmed active contrast extravasation into the gastric tube. She proceeded to the Interventional Radiology suite where a thoracic angiogram revealed an active arterial bleed from a branch of the thyrocervical trunk. The bleeding vessel was successfully embolised with coils and haemostasis was achieved.

DISCUSSION

Management options for upper GI bleeding post esophagectomy include medical, endoscopic and endovascular approaches.

CONCLUSION

Our case represents a rare example of delayed bleeding into a gastric conduit post open esophagectomy for a benign stricture. The case reinforces.

Gastrointestinal endoscopy in children and adults: How do they differ?

Gastrointestinal endoscopy has grown dramatically over the past century, and with subsequent improvements in technology and anaesthesia, it has become a safe and useful tool for evaluation of GI pathology in children. There are substantial differences between paediatric and adult endoscopy beyond size, including: age-related patho-physiology and the different spectrum of diseases in children. Literature on endoscopic procedures in children is sparse but significant. The present review aims at describing the current knowledges on paediatric endoscopy practice and highlights the main areas of differences between paediatric and adult practice.

Re-bleeding and its predictors after capsule endoscopy in patients with obscure gastrointestinal bleeding in long-term follow-up

Background

Capsule endoscopy (CE) is the preferred diagnostic test of choice in the investigation of obscure gastrointestinal bleeding (OGIB). Although, a conservative strategy is recommended in the short-term, for cases with a negative result from CE, the impact of CE on long-term re-bleeding still remains unclear. Hence, the aim of this study was to determine the long-term re-bleeding rate along with predictors after CE in patients with OGIB.

Methods

We retrospectively reviewed 216 patients with OGIB, whom had received a CE examination, so as to investigate the cause of obscure GI bleeding; between July 2008 and March 2018. The patient’s characteristics, medication use, CE finding, treatments strategy, re-bleeding episodes and follow-up information were collected from the institutional electronic medical chart and CE database. Re-bleeding free survival was evaluated using Kaplan-Meier curves with log rank test, whilst predictors associated with the re-bleeding episodes were analyzed via the use of Cox proportional hazard model.

Results

One hundred and thirty-three patients with OGIB, having received CE were enrolled in the analysis. The pool rate of re-bleeding was 26.3% (35/133) during a follow-up duration of 26 months after CE. Patients with positive CE study, without specific treatment, had higher rates of re-bleeding (47.6%) than those with positive study whom received specific treatment (25.7%), and negative study (20.8%) (p = 0.042). Although, the re-bleeding free survival was not significantly different among the groups (log rank test; P = 0.10). Re-bleeding events occurring within 6, 12, and 24 months after CE were 36, 64 and 92%, respectively. The high-frequency re-bleeding etiologies were the small bowel angiodysplasias and abnormal vascular lesions. Furthermore, independent predictors for re-bleeding after CE were patients with cirrhosis (hazard ratio, HR 4.06), incomplete CE visualization (HR 2.97), and a history of previous GI bleeding (HR 2.80).

Conclusions

The likelihood of re-bleeding after CE was higher in patients with positive CE study than those with negative study. Specific treatments, or therapeutic interventions for patients with detectable lesions reduced the probability of re-bleeding episodes in long-term follow-up. Close follow-up for recurrent bleeding is recommeded for at least 2 years after CE.

History of malignancy and relevant symptoms may predict a positive computed tomography enterography in obscure gastrointestinal bleeds

BACKGROUND AND AIM

This study aimed to assess the clinical utility of computed tomography enterography (CTE) and identify factors associated with a diagnostic CTE for patients with obscure gastrointestinal bleeding (OGIB).

METHODS

A retrospective observational study was performed at a Canadian tertiary care center from 2005 to 2015. A total of 138 patients underwent a CTE for OGIB. Univariate and multivariate logistic regressions were performed to determine factors associated with a diagnostic CTE. A highly sensitive clinical rule was then developed to help identify OGIB patients for whom a CTE may be beneficial in their clinical work-up.

RESULTS

A possible bleeding source was identified in 30 (22%) cases. The presence of abdominal or constitutional symptoms as well as history of colorectal cancer was significantly associated with a positive CTE in univariate and multivariate analyses (P < 0.05). A positive CTE could be predicted based on the presence of abdominal or constitutional symptoms and history of colorectal cancer with 90% sensitivity (95% CI 74-98%) in our population.

CONCLUSION

CTE identified a possible source of OGIB in one in five cases. In patients with the presence of abdominal or constitutional symptoms and a personal history of colorectal cancer, CTE may contribute to their diagnostic work-up.

A randomized controlled trial comparing efficacy of early video capsule endoscopy with standard of care in the approach to nonhematemesis GI bleeding (with videos)

BACKGROUND AND AIMS

Patients presenting with nonhematemesis GI bleeding (NHGIB) represent a diagnostic challenge for physicians. We performed a randomized controlled trial to assess the benefits of deployment of a video capsule soon after admission in the management of patients presenting with melena, hematochezia, or severe anemia compared with standard of care management.

METHODS

Patients admitted with NHGIB were randomized and placed into 1 of 2 study groups. In the experimental group, patients ingested a video capsule soon after admission to the hospital. These patients had further endoscopic workup based on the findings from the capsule. Patients in the control group underwent endoscopic evaluation (ie, upper endoscopy, capsule endoscopy, and/or colonoscopy) to identify the source of bleeding as directed by the attending gastroenterologist's interpretation of their clinical presentation. The primary endpoint for this study was the rate of localization of bleeding during hospitalization.

RESULTS

Eighty-seven patients were included in this study: 45 randomized to the standard of care arm and 42 to the early capsule arm. A bleeding source was localized in 64.3% of the patients in the early capsule arm and in 31.1% of the patients in the standard of care arm (P < .01). The likelihood of endoscopic localization of bleeding over time was greater for patients receiving early capsule endoscopy compared with those in the standard of care arm (adjusted hazard ratio, 2.77; 95% confidence interval, 1.36-5.64).

CONCLUSIONS

For patients admitted to the hospital for NHGIB, early capsule endoscopy is a safe and effective alternative for the detection of the source of bleeding. (Clinical trial registration number: NCT02442830.).

Enteroscopy in children

INTRODUCTION

Device-assisted enteroscopy is a new endoscopic technique for the evaluation of small bowel in adults and children. Data in pediatric population are limited. This review aims to identify diagnostic and therapeutic benefits of enteroscopy in children.

METHODS

We have analysed paediatric literature on device-assisted enteroscopy focusing on indications, technical aspects and complications, with attention given to adult publications that may be applicable to the paediatric population.

RESULTS

Obscure gastrointestinal bleeding, Crohn's disease and small bowel polyps are the main indications of enteroscopy in children. Device-assisted enteroscopy has high diagnostic yield for the main paediatric indications, but MR-enterography and capsule endoscopy should be used beforehand in diagnostic work-up to better identify candidates for enteroscopy and to improve its diagnostic and therapeutic yield. Major complications are rare and mostly related to therapeutic procedures.

CONCLUSION

Despite limited data in the paediatric population, device-assisted enteroscopy represents a useful and safe endoscopic technique in children. Its use, combined with MR-enterography and capsule endoscopy, allows identification and treatment of many of the small bowel paediatric diseases with a low risk of complications.

Colonoscopy in Acute Lower Gastrointestinal Bleeding: Diagnosis, Timing, and Bowel Preparation

Lower gastrointestinal bleeding is bleeding from a colonic source. Rapid colon purge using 4 to 6 L of polyethylene glycol followed by early colonoscopy, within 24 hours of presentation, is recommended to optimize the detection and management of bleeding sources. Although the data are mixed, early colonoscopy seems to be associated with higher detection of bleeding lesions and therapeutic interventions. There is no clear benefit for early colonoscopy in terms of reduced duration of stay, rebleeding, transfusion requirement, or surgery compared with patients undergoing elective colonoscopy. Further studies are needed to determine the effect of early colonoscopy on clinically important outcomes.

Nomogram-based prediction of rebleeding in small bowel bleeding patients: the 'PRSBB' score

Small bowel capsule endoscopy (SBCE) and balloon-assisted endoscopy (BAE) have revolutionized the diagnosis and treatment of small bowel bleeding (SBB), allowing access to the small bowel and identification of specific bleeding lesions. However, some patients experience rebleeding after small bowel investigation, and there are no definitive algorithms for determining the most appropriate follow-up strategy in SBB patients. We developed and validated a nomogram that can predict rebleeding risk and be used to develop a risk-stratified follow-up strategy in SBB patients. A retrospective study was performed using data from 401 SBB patients who underwent SBCE at Nagoya University Hospital. We developed and internally validated a predictive model for rebleeding in the form of a nomogram using Cox regression models and a bootstrap resampling procedure. Optimal risk factors were selected according to the least absolute shrinkage and selection operator (LASSO). The LASSO method identified 8 independent predictors of rebleeding that could be assessed to obtain a ‘predicting rebleeding in SBB’, or ‘PRSBB’ score: age, sex, SBB type, transfusion requirement, cardiovascular disease, liver cirrhosis, SBCE findings, and treatment. The c-statistic for the predictive model was 0.681. In conclusion, our PRSBB score can help clinicians devise appropriate follow-up plans.

Meta-analysis shows similar re-bleeding rates among Western and Eastern populations after index video capsule endoscopy

BACKGROUND & AIMS

Video capsule endoscopy (VCE) is the first-line diagnostic procedure for investigating obscure gastrointestinal bleeding (OGIB). Different re-bleeding rates following index VCE have been reported among Western and Eastern studies.

METHODS

We conducted a comprehensive literature search to identify studies examining re-bleeding rates after VCE for OGIB. Meta-analysis assessed the pooled proportion of re-bleeding events after VCE for OGIB according to study's origin (Western vs. Eastern) and according to the length of follow-up (≥24 months vs. <24 months). We also calculated the re-bleeding odds ratios (OR; 95% CI) after positive vs. negative index VCE, overt vs. occult initial presentation of bleeding and after interventional treatment for positive index cases, according to the study's origin.

RESULTS

We included 46 (30 Western and 16 Eastern) studies with 5796 patients. Significant heterogeneity was detected among meta-analyzed studies. Overall, the pooled re-bleeding rate was similar between Western (29%; 95% CI: 23-34) and Eastern (21%; 95% CI: 15-27) populations, irrespective of the length of follow-up. The odds of re-bleeding was significantly higher after positive as compared to negative index VCE in Eastern studies (OR: 1.77; 95% CI: 1.07-2.94). Application of specific treatment after positive index VCE was associated with lower re-bleeding odds in both Western (OR: 0.37; 95% CI: 0.16-0.87) and Eastern (OR: 0.39; 95% CI: 0.21-0.72) populations.

CONCLUSIONS

Patients undergoing VCE for OGIB have similar re-bleeding rates in the East and the West, regardless of the length of follow-up. However, increased re-bleeding odds after positive index VCE is observed in Eastern studies.

Urgent endoscopic retrograde cholangiopancreatography is not superior to early ERCP in acute biliary pancreatitis with biliary obstruction without cholangitis

Acute pancreatitis is a common diagnosis worldwide, with gallstone disease being the most prevalent cause (50%). The American College of Gastroenterology recommends urgent endoscopic retrograde cholangiopancreatography (ERCP) (within 24 h) for patients with biliary pancreatitis accompanied by cholangitis. Most international guidelines recommend that ERCP be performed within 72 h in patients with biliary pancreatitis and a bile duct obstruction without cholangitis, but the optimal timing for endoscopy is controversial. We investigated the optimal timing for ERCP in patients with biliary pancreatitis and a bile duct obstruction without cholangitis, and whether performing endoscopy within 24 h is superior to performing it after 24 h. We analyzed the clinical data of 505 patients with newly diagnosed acute pancreatitis, from January 1, 2005 to December 31, 2014. We divided the patients into two groups according to the timing of ERCP: < 24 h (urgent) and 24–72 h (early).Among the 505 patients, 73 were diagnosed with biliary pancreatitis and a bile duct obstruction without cholangitis. The mean age of the patients was 55 years (range: 26–90 years). Bile duct stones and biliary sludge were identified on endoscopy in 45 (61.6%) and 11 (15.0%) patients, respectively. The timing of ERCP within 72 h was not associated with ERCP-related complications (P = 0.113), and the total length of hospital stay was not different between urgent and early ERCP (5.9 vs. 5.7 days, P = 0.174). No significant differences were found in total length of hospitalization or procedural-related complications, in patients with biliary pancreatitis and a bile duct obstruction without cholangitis, according to the timing of ERCP (< 24 h vs. 24–72 h).

Clinical outcome of patients with obscure gastrointestinal bleeding during antithrombotic drug therapy

BACKGROUND

The clinical outcome of patients with obscure gastrointestinal bleeding (OGIB) during antithrombotic drug therapy has not been fully investigated.

METHODS

Patients who underwent video capsule endoscopy (VCE) for the investigation of OGIB at Okayama University Hospital from January 2009 to March 2016 were enrolled. We evaluated the VCE findings, the patterns of OGIB, and the rate of rebleeding within 1 year in antithrombotic drug users and antithrombotic drug nonusers.

RESULTS

A total of 181 patients were enrolled. Among the antithrombotic drug users, the rate of VCE positivity in the patients with overt OGIB was significantly higher in comparison with patients with occult OGIB (45% versus 16%, p = 0.014), whereas there was no significant difference among the antithrombotic drug nonusers (27% versus 26%, p = 1.0). Among the antithrombotic drug users, the rate of rebleeding among the VCE-positive patients was significantly higher in comparison with the VCE-negative patients (50% versus 5.9%, p = 0.011). Moreover, among antithrombotic drug users who did not receive therapeutic intervention, the rate of rebleeding among the VCE-positive patients was significantly higher in comparison with the VCE-negative patients (75% versus 6.3%, p = 0.001). However, among the antithrombotic drug nonusers who did not receive therapeutic intervention, the rebleeding rate of the VCE-positive patients was not significantly different from that of the VCE-negative patients (20% versus 9.4%, p = 0.43).

CONCLUSION

Therapeutic intervention should be considered for patients with overt OGIB who are VCE positive and who use antithrombotic drugs due to the high risk of rebleeding.

New predictive model for acute gastrointestinal bleeding in patients taking oral anticoagulants: A cohort study

BACKGROUND AND AIM

The study developed a predictive model of long-term gastrointestinal (GI) bleeding risk in patients receiving oral anticoagulants and compared it with the HAS-BLED (Hypertension, Abnormal renal/liver function, Stroke, Bleeding history or predisposition, Labile international normalized ratios, Elderly, Drugs/alcohol concomitantly) score.

METHODS

The study periodically followed a cohort of 508 patients taking oral anticoagulants (66 direct oral anticoagulants users and 442 warfarin users). Absence of GI bleeding at an initial examination and any subsequent GI bleeding were confirmed endoscopically. The bleeding model was developed by multivariate survival analysis and evaluated by Harrell's c-index.

RESULTS

During a median follow-up of 31.4 months, 42 GI bleeds (8.3%) occurred: 42.8% in the upper GI tract, 50.0% in the lower GI tract, and 7.1% in the middle GI tract. The cumulative 5 and 10-year probability of GI bleeding was 12.6% and 18.5%, respectively. Patients who bled had a significantly higher cumulative incidence of all-cause mortality (hazard ratio 2.9, P < 0.001). Multivariate analysis revealed that absence of proton pump inhibitor therapy, chronic kidney disease, chronic obstructive pulmonary disease, history of peptic ulcer disease, and liver cirrhosis predicted GI bleeding. The c-statistic for the new predictive model using these five factors was 0.65 (P < 0.001), higher than the HAS-BLED score of 0.57 (P = 0.145).

CONCLUSIONS

Gastrointestinal bleeding increased the risk of subsequent mortality during follow-up of anticoagulated patients, highlighting the importance of prevention. The study developed a new scoring model for acute GI bleeding risk based on five factors (no-proton pump inhibitor use, chronic kidney disease, chronic obstructive pulmonary disease, history of peptic ulcer disease, and liver cirrhosis), which was superior to the HAS-BLED score.

Primary small bowel adenocarcinoma: current view on clinical features, risk and prognostic factors, treatment and outcome

Small bowel adenocarcinoma (SBA) is a rare but increasing cause of gastrointestinal malignancy, being both a diagnostic and therapeutic challenge. The goal of treatment is margin negative resection of a lesion and local lymphadenectomy, followed by modern adjuvant chemotherapy combinations in selected cases. Improved outcomes in patients with SBA are encouraging, but elucidation of mechanisms of carcinogenesis and risk factors as well as improved treatment for this malignancy is very needed.

A Prospective Blinded Comparison of Video Capsule Endoscopy Versus Computed Tomography Enterography in Potential Small Bowel Bleeding: Clinical Utility of Computed Tomography Enterography

GOALS

To compare the efficacy of video capsule endoscopy (VCE) with computed tomography enterography (CTE) in potential small bowel (SB) bleeding, and to identify factors predictive of a high diagnostic yield for CTE.

BACKGROUND

In potential SB bleeding, CTE potentially detects some lesions missed by VCE, but few data have determined its clinical utility.

STUDY

Consecutive patients with potential SB bleeding were prospectively enrolled. All underwent VCE and CTE within a 1-week interval. Definitive diagnoses were made by surgery or enteroscopy, except when a strategy of VCE and conservative management was suitable. The diagnostic yields and sensitivities of each investigation were measured.

RESULTS

Fifty-two patients were recruited (41 with overt and 11 with occult bleeding); 36 received a definitive diagnosis. The diagnostic yields and sensitivities of VCE and CTE were 59.6% and 30.8% (P=0.004), and 72.2% and 44.4% (P=0.052), respectively. The combined sensitivity of VCE and CTE (88.9%) was significantly greater than VCE (P=0.03) or CTE (P<0.01) alone. VCE was better for ulcers, enteritis, and angiodysplasia, whereas CTE was better for tumors and Meckel diverticula. Age below 40 years and severe bleeding were associated with a higher diagnostic yield for CTE [odds ratios (95% confidence interval)=7.3 (1.04-51.4), P=0.046 and 6.1 (1.4-25.5), P=0.014, respectively].

CONCLUSIONS

Both investigations complement each other in the diagnosis of potential SB bleeding. CTE should be considered when VCE is negative. Age below 40 years and severe bleeding were independent predictors of a higher diagnostic yield for CTE.

Long-term effects of video capsule endoscopy in the management of obscure gastrointestinal bleeding

Obscure gastrointestinal bleeding (OGIB) accounts for approximately 5% of all gastrointestinal (GI) hemorrhages. It usually arises from a small bowel lesion beyond the reach of conventional endoscopy including esophagogastroduodenoscopy and colonoscopy. Video capsule endoscopy (VCE) revolutionized the evaluation of OGIB patients since it allows reliable and noninvasive visualization of the small bowel mucosal surface. Since 2001, VCE has evolved into an efficient technology integrated in clinical practice. It is the cornerstone in the algorithm of OGIB investigation given its high diagnostic yield, which compares favorably to that of double-balloon enteroscopy (DBE). In terms of outcomes, a positive index VCE examination usually correlates to a high re-bleeding rate, while a negative one provides adequate evidence of low re-bleeding risk, suggesting a wait and watch approach in this subset of patients. Additionally, a variety of factors has been acknowledged as significant predictors of re-bleeding episodes. While research data regarding immediate endoscopic findings have matured, data concerning the clinical utility of VCE in patients with OGIB on the long-term remain sparse. This manuscript reviews the current literature, aiming to highlight the role of VCE in the long-term management of OGIB.

Small-bowel capsule endoscopy with panoramic view: results of the first multicenter, observational study (with videos)

BACKGROUND AND AIMS

The first small-bowel video-capsule endoscopy (VCE) with 360° panoramic view has been developed recently. This new capsule has wire-free technology, 4 high-frame-rate cameras, and a long-lasting battery life. The aim of the present study was to assess the performance and safety profile of the 360° panoramic-view capsule in a large series of patients from a multicenter clinical practice setting.

METHODS

Consecutive patients undergoing a 360° panoramic-view capsule procedure in 7 European Institutions between January 2011 and November 2015 were included. Both technical (ie, technical failures, completion rate) and clinical (ie, indication, findings, retention rate) data were collected by means of a structured questionnaire. VCE findings were classified according to the likelihood of explaining the reason for referral: P0, low; P1, intermediate; P2, high.

RESULTS

Of the 172 patients (94 men; median age, 68 years; interquartile range, 53-75), 142 underwent VCE for obscure (32 overt, 110 occult) GI bleeding (OGIB), and 28 for suspected (17) or established (2) Crohn's disease (CD). Overall, 560 findings were detected; 252 were classified as P2. The overall diagnostic yield was 40.1%; 42.2% and 30.0% in patients with OGIB and CD, respectively. The rate of complete enteroscopy was 90.2%. All patients but one, who experienced capsule retention (1/172, 0.6%), excreted and retrieved the capsule. VCE failure occurred in 4 of 172 (2.3%) patients because of technical problems.

CONCLUSIONS

This multicenter study, conducted in the clinical practice setting and based on a large consecutive series of patients, showed that the diagnostic yield and safety profile of the 360° panoramic-view capsule are similar to those of forward-view VCEs.

Clinical outcomes of negative small-bowel capsule endoscopy for small-bowel bleeding: a systematic review and meta-analysis

BACKGROUND AND AIMS

Small-bowel bleeding is the primary indication for capsule endoscopy (CE). Many experts advocate a "watch-and-wait" policy in negative CE. This meta-analysis examines the odds of rebleeding after negative index CE and the impact on long-term follow-up.

METHODS

A comprehensive literature search identified articles examining the rebleeding rate after negative CE. Demographic and clinical information with emphasis on outcomes was retrieved, pooled, and analyzed. Heterogeneity among studies was assessed using the I² statistic. A random effects model was used as the pooling method because of high heterogeneity. Risk of bias was assessed using the quality assessment of diagnostic accuracy studies (QUADAS-2) tool. The primary outcome evaluated was the pooled odds ratios (ORs) for rebleeding after a negative CE for obscure GI bleeding (OGIB).

RESULTS

Twenty-six studies with 3657 patients were included. The pooled rate of rebleeding after negative CE was .19 (95% CI, .14-.25; P < .0001). The pooled OR of rebleeding was .59 (95% CI, .37-.95; P < .001). The effect was more pronounced in studies with a short follow-up (OR, .47; 95% CI, .24-.94; P < .001). There was no statistically significant difference in rebleeding after CE for occult and overt OGIB. Prospective studies showed a lower OR of rebleeding of .24 (95% CI, .08-.73; P = .01). Most studies were high quality.

CONCLUSIONS

Our analysis shows that negative CE provides adequate evidence of a subsequently low risk of rebleeding. Such patients can therefore be safely managed with watchful waiting. However, patients who rebleed after 2 years may need to be investigated for a new source of blood loss.

Duodenal plexiform fibromyxoma as a cause of obscure upper gastrointestinal bleeding: A case report

RATIONALE

We are reporting the first-to our knowledge-case of duodenal Plexiform Fibromyxoma causing obscure upper gastrointestinal bleeding.

PATIENT CONCERNS

Plexiform fibromyxoma triggered recurrent upper gastrointestinal bleeding episodes in a 63-year-old man who remained undiagnosed, despite multiple hospitalizations, extensive diagnostic workups and surgical interventions (including gastrectomies), for almost 17 years.

DIAGNOSES-INTERVENTIONS

During hospitalization for the last bleeding episode, an upper gastrointestinal endoscopy revealed an intestinal hemorrhagic nodule. The lesion was deemed unresectable by endoscopic means. An abdominal computerized tomography disclosed no further lesions and surgery was decided. The lesion at operation was found near the edge of the duodenal stump and treated with pancreas-preserving duodenectomy (1st and 2nd portion).

OUTCOMES

Postoperative recovery was mainly uneventful and a 20-month follow-up finds the patient in good health with no need for blood transfusions.Plexiform fibromyxomas stand for a rare and widely unknown mesenchymal entity. Despite the fact that they closely resemble other gastrointestinal tumors, they distinctly vary in clinical management as well as the histopathology. Clinical awareness and further research are compulsory to elucidate its clinical course and prognosis.

[Obscure gastrointestinal bleeding due to gastrointestinal stromal tumors]

BACKGROUND

The gastrointestinal stromal tumours (GIST) are the most common soft tissue sarcomas of the digestive tract. They are usually found in the stomach (60-70%) and small intestine (25-30%) and, less commonly, in the oesophagus, mesentery, colon, or rectum. The symptoms present at diagnosis are, gastrointestinal bleeding, abdominal pain, abdominal mass, or intestinal obstruction. The type of symptomatology will depend on the location and size of the tumour. The definitive diagnosis is histopathological, with 95% of the tumours being positive for CD117.

CLINICAL CASES

This is an observational and descriptive study of 5cases of small intestinal GIST that presented with gastrointestinal bleeding as the main symptom. The period from the initial symptom to the diagnosis varied from 1 to 84 months. The endoscopy was inconclusive in all of the patients, and the diagnosis was made using computed tomography and angiography. Treatment included resection in all patients. The histopathological results are also described.

CONCLUSION

GIST can have multiple clinical pictures and unusual symptoms, such as obscure gastrointestinal bleeding. The use of computed tomography and angiography has shown to be an important tool in the diagnosis with patients with small intestine GISTs.

The Approach to Occult Gastrointestinal Bleed

Occult gastrointestinal bleeding is not visible and may present with a positive fecal occult blood test or iron deficiency anemia. Obscure bleeding can be overt or occult, with no source identified despite an appropriate diagnostic workup. A stepwise approach to this evaluation after negative upper and lower endoscopy has been shown to be cost effective. This includes repeat endoscopies if warranted, followed by video capsule endoscopy (VCE) if no obstruction is present. If the VCE is positive then specific endoscopic intervention may be possible. If negative, patients may undergo either repeat testing or watchful waiting with iron supplements.

[Clinical Efficacy of Dynamic Contrast-enhanced Multidetector-row Computed Tomography in Patients with Obscure Gastrointestinal Bleeding]

BACKGROUND/AIMS

Obscure gastrointestinal bleeding (OGIB) accounts for 5% of all gastrointestinal (GI) bleeding cases. Dynamic contrast-enhanced multidetector-row CT (DCE-MDCT) is not generally recommended in OGIB patients due to its low sensitivity. However, it can be used to quickly and simply diagnose OGIB according to some guidelines. The aim of this study was to evaluate the clinical efficacy of DCE-MDCT in OGIB patients.

METHODS

We retrospectively analyzed the medical records of 362 patients who underwent DCE-MDCT between March 2009 and January 2014. A total of 45 patients diagnosed with OGIB were included in this study. Their baseline characteristics and treatment procedure were analyzed retrospectively. The positive rates of DCE-MDCT for the detection of bleeding and associated factors were assessed.

RESULTS

The mean age of the patients was 59 years, and males represented 51.1%. Melena was the most common symptom (44.4%). Positive rate of DCE-MDCT findings was 20.0% (9/45). Among these patients, intraluminal contrast extravasation was found in 5 patients (55.6%) and intraluminal hematoma or mass lesions were found in 2 patients each (22.2%). Thirty nine patients (86.7%) underwent conservative management, and 6 patients (13.3%) underwent specific treatment, such as endoscopic treatment, embolization, or surgery. Patients who showed positivity in DCE-MDCT more frequently received specific treatment compared with those who were negative (44.4% vs. 5.6%, p=0.010).

CONCLUSIONS

Although DCE-MDCT showed a low positive rate (20.0%), positive findings of DCE-MDCT could lead to specific treatment. Positive DCE-MDCT findings play a useful role in the management of patients with OGIB.

The Role of Emergency Endoscopy in Small Bowel Bleeding: A Review

There is no consensus on the timing and management of emergency overt obscure gastrointestinal bleeding. Emergency capsule endoscopy and balloon-assisted enteroscopy have a high diagnostic and therapeutic yield in these situations. Most lesions detected by small bowel endoscopy are amenable to endoscopic haemostasis, although some lesions still require surgery or interventional radiology. The management of these patients is varied, and doubt persists about which technique should be preferred as first-line treatment. This narrative review analyses the usefulness and impact of small bowel endoscopic techniques in the emergency setting for severe overt obscure gastrointestinal bleeding.

Lower Gastrointestinal Bleeding in Children

This article provides an overview of the evaluation and management of lower gastrointestinal bleeding (LGIB) in children. The common etiologies at different ages are reviewed. Conditions with endoscopic importance for diagnosis or therapy include solitary rectal ulcer syndrome, polyps, vascular lesions, and colonic inflammation and ulceration. Diagnostic modalities for identifying causes of LGIB in children include endoscopy and colonoscopy, cross-sectional and nuclear medicine imaging, video capsule endoscopy, and enteroscopy. Pre-endoscopic preparation and decision-making unique to pediatrics is highlighted. The authors conclude with a summary of current and emerging therapeutic hemostatic techniques that can be used in pediatric patients.

Efficacy and implications of a 48-h cutoff for video capsule endoscopy application in overt obscure gastrointestinal bleeding

BACKGROUND AND STUDY AIMS

Early video capsule endoscopy (VCE) may provide a high diagnostic yield and improve clinical outcomes in patients with overt obscure gastrointestinal bleeding (OGIB); however, there is no practical recommendation for the ideal timing of VCE application in overt OGIB. Therefore, this study investigated the diagnostic yield and efficacy of VCE to assess overt OGIB with respect to the timing of application.

PATIENTS AND METHODS

We retrospectively enrolled patients who had undergone VCE for overt OGIB between April 2004 and February 2014 at a tertiary referral academic center. We included hemodynamically stable patients who underwent VCE for overt OGIB after negative bidirectional endoscopy. We analyzed the diagnostic yield of VCE, therapeutic intervention rate, and length of hospital stay.

RESULTS

A total of 94 patients underwent VCE to assess overt OGIB. The diagnostic yields in the groups that underwent VCE < 48 h and > 48 h from the last overt OGIB were 66.7 % and 40.6 %, respectively (P = 0.019). Therapeutic intervention was performed in 26.7 % and 9.4 % of patients in the < 48-h and > 48-h groups, respectively (P = 0.028). The mean lengths of hospital stay in the < 48-h and > 48-h groups were 5 days (95 % confidence interval [CI], 4.8 - 7.7) and 7 days (95 %CI, 6.9 - 10.1), respectively (P = 0.039).

CONCLUSIONS

Performing VCE within 2 days from the last overt OGIB results in a higher diagnostic yield, higher therapeutic intervention rate, and shorter hospital stay. Therefore, VCE application with a 48-h cutoff could improve the outcome of patients with overt OGIB.

Emergency double-balloon enteroscopy combined with real-time viewing of capsule endoscopy: a feasible combined approach in acute overt-obscure gastrointestinal bleeding?

BACKGROUND AND AIM

There are few data concerning emergency double-balloon enteroscopy (DBE) and its usefulness in the management of severe acute obscure gastrointestinal bleeding (OGIB). The aim of this retrospective study was to evaluate emergency DBE and capsule endoscopy (CE) in patients with overt OGIB, analyzing the feasibility of this combined approach.

METHODS

Emergency DBE in patients with overt OGIB was defined as performance within 24 h of symptom onset. We reported 27 patients (16 men, mean age: 64.6 ± 17.9 years) with overt severe bleeding who underwent 29 emergency DBE (22 anterograde, 7 retrograde). Of 27 patients, 16 (59.3%) underwent CE with real time (RT) viewing.

RESULTS

Patients were diagnosed with the following: Dieulafoy's lesion (DL; n = 11, 40.7%), angioectasia (n = 7, 25.9%), tumors (n = 4, 14.8%), diverticulum (n = 3, 11.1%), ulcers (n = 2, 7.4%). We diagnosed 23 lesions amenable to endoscopic hemostasis and successfully treated 21 of them (77.8%). DL detection rate was statistically higher in the emergency DBE group than in OGIB patients with DBE done 24 h after symptom onset (40.7% vs 0.9%, respectively, P < 0.001). Combined approach with RT viewing by CE correctly modified DBE management in four patients (25%).

CONCLUSIONS

Emergency DBE is feasible, safe and effective in acute OGIB and may avoid major surgery, diagnosing and successfully treating most patients. Combined approach with RT viewing by CE is especially useful to identify recurrent bleeding vascular lesions such as DL that may be easily misdiagnosed by non-emergency DBE.

Randomized controlled trial comparing outcomes of video capsule endoscopy with push enteroscopy in obscure gastrointestinal bleeding

BACKGROUND

Optimal management of obscure gastrointestinal bleeding (OGIB) remains unclear.

OBJECTIVE

To evaluate diagnostic yields and downstream clinical outcomes comparing video capsule endoscopy (VCE) with push enteroscopy (PE).

METHODS

Patients with OGIB and negative esophagogastroduodenoscopies and colonoscopies were randomly assigned to VCE or PE and followed for 12 months. End points included diagnostic yield, acute or chronic bleeding, health resource utilization and crossovers.

RESULTS

Data from 79 patients were analyzed (VCE n=40; PE n=39; 82.3% overt OGIB). VCE had greater diagnostic yield (72.5% versus 48.7%; P<0.05), especially in the distal small bowel (58% versus 13%; P<0.01). More VCE-identified lesions were rated possible or certain causes of bleeding (79.3% versus 35.0%; P<0.05). During follow-up, there were no differences in the rates of ongoing bleeding (acute [40.0% versus 38.5%; P not significant], chronic [32.5% versus 45.6%; P not significant]), nor in health resource utilization. Fewer VCE-first patients crossed over due to ongoing bleeding (22.5% versus 48.7%; P<0.05).

CONCLUSIONS

A VCE-first approach had a significant diagnostic advantage over PE-first in patients with OGIB, especially with regard to detecting small bowel lesions, affecting clinical certainty and subsequent further small bowel investigations, with no subsequent differences in bleeding or resource utilization outcomes in follow-up. These findings question the clinical relevance of many of the discovered endoscopic lesions or the ability to treat most of these effectively over time. Improved prognostication of both patient characteristics and endoscopic lesion appearance with regard to bleeding behaviour, coupled with the impact of therapeutic deep enteroscopy, is now required using adapted, high-quality study methodologies.

Optimizing lesion detection in small-bowel capsule endoscopy: from present problems to future solutions

This review presents issues pertaining to lesion detection in small-bowel capsule endoscopy (SBCE). The use of prokinetics, chromoendoscopy, diagnostic yield indicators, localization issues and the use of 3D reconstruction are presented. The authors also review the current status (and future expectations) in automatic lesion detection software development. Automatic lesion detection and reporting, and development of an accurate lesion localization system are the main software challenges of our time. The 'smart', selective and judicious use (before as well as during SBCE) of prokinetics in combination with other modalities (such as real time and/or purge) improves the completion rate of SBCE. The tracking of the capsule within the body is important for the localization of abnormal findings and planning of further therapeutic interventions. Currently, localization is based on transit time. Recently proposed software and hardware solutions are proposed herein. Moreover, the feasibility of software-based 3D representation (attempt for 3D reconstruction) is examined.

Capsule endoscopy followed by single balloon enteroscopy in children with obscure gastrointestinal bleeding: a combined approach

BACKGROUND

This prospective single-centre study aims to evaluate a new diagnostic algorithm using capsule endoscopy, colon capsule endoscopy and single-balloon enteroscopy in the work-up of obscure gastrointestinal bleeding in children.

METHODS

The usefulness of a new diagnostic algorithm was assessed comparing the clinically relevant findings revealed by each technique, and evaluating the clinical outcomes during the follow-up.

RESULTS

A total of 22 paediatric patients were evaluated (14 male; mean age 12.5 years ± 3.9). Capsule endoscopies were positive in 14 (63.6%), suspicious in 5 (22.7%) and negative in 3 (13.6%). A second look with colon capsule identified new lesions in 2/3 (67%) of previous negative cases. Enteroscopies were able to reach the positive and suspicious findings in all but 2, in which an intraoperative enteroscopy was needed. This combined approach showed positive findings in 21/22 of cases with a diagnostic yield of 95%. Eighteen patients (82%) had a complete resolution after therapy. One patient resolved his symptoms spontaneously. Despite diagnosis, in three patients (13.6%) the gastrointestinal bleeding was not resolved after therapy.

CONCLUSION

This algorithm achieves optimal levels of diagnostic yield (95%) and therapeutic outcome (82%). This approach deserves to be studied in a larger multicentre cohort of patients and for a longer follow-up period.

[Capsule endoscopy and obscure gastrointestinal bleeding: does the form of presentation matter?]

INTRODUCTION

Obscure gastrointestinal bleeding (OGIB) is defined as bleeding from the gastrointestinal tract with no obvious cause after assessment with upper and lower gastrointestinal endoscopy. In these cases, the source is suspected to be in the small bowel. Obscure bleeding can be occult or overt. The aim of this study was to analyze the clinical and analytical characteristics and findings on capsule endoscopy in patients with OGIB and to determine the factors related to the detection of lesions in both forms of presentation.

METHODS

We performed a retrospective study of capsule endoscopies carried out between November 2009 and November 2012 for OGIB.

RESULTS

We analyzed 284 capsule endoscopies in 272 patients. Initially, 12 procedures could not be evaluated and were repeated. A total of 272 procedures were finally included in the analysis. The results of 114 (41.9%) capsule endoscopies were normal. Compared with patients with occult OGIB, those with overt OGIB were significantly older (70.2 vs. 67.5 years; p = 0.04), consumed more NSAID (24.2% vs. 11.9%; p = 0.01), had higher hemoglobin levels (9.3 vs. 10.4; p < 0,001) and more frequently required transfusion (64.5% vs 32.2%; p < 0.001). No differences were found between the two forms of presentation in the detection of canker sores-ulcers and polyps-masses. Vascular lesions were more frequently detected in overt than in occult OGIB (40.3% vs. 25.7%, respectively), (p < 0.05). When the total number of diagnoses carried out by capsule endoscopy was analyzed, no differences were found in diagnostic yield between overt OGIB (57%) and occult OGIB (54%), (p = 0.6). In overt OGIB, multivariate analysis showed that the variables that significantly predicted the detection of lesions on capsule endoscopy were consumption of medication NSAID (OR 2.75; p = 0.01), antiplatelets and anticoagulants (OR 2.64; p = 0.03) and analytical data hemoglobin (OR 3.23; p < 0.001) and INR (OR 1.8; p = 0.02). In occult OGIB, multivariate analysis showed that the factors significantly related to the detection of lesions on endoscopy were age (OR 1.9; p = 0.04) and NSAID consumption (OR 2.1; p = 0.01).

CONCLUSIONS

Capsule endoscopy is essential in the assessment of OGIB. Although the diagnostic yield was similar in both forms of presentation, vascular lesions were more frequently detected in overt OGIB. The diagnostic yield of capsule endoscopy could be optimized by taking into account the form of presentation (overt vs. occult) and certain clinical and analytic data (age, drug consumption, hemoglobin).

Evaluation and outcomes of patients with obscure gastrointestinal bleeding

Obscure gastrointestinal bleeding (OGIB) is defined as recurrent or persistent bleeding or presence of iron deficiency anaemia after evaluation with a negative bidirectional endoscopy. OGIB accounts for 5% of gastrointestinal bleeding and presents a diagnostic challenge. Current modalities available for the investigation of OGIB include capsule endoscopy, balloon assisted enteroscopy, spiral enteroscopy and computed tomography enterography. These modalities overcome the limitations of previous techniques. Following a negative bidirectional endoscopy, capsule endoscopy and double balloon enteroscopy remain the cornerstone of investigation in OGIB given their high diagnostic yield. Long-term outcome data in patients with OGIB is limited, but is most promising for capsule endoscopy. This article reviews the current literature and provides an overview of the clinical evaluation of patients with OGIB, available diagnostic and therapeutic modalities and long-term clinical outcomes.

Capsule endoscopic findings correlate with fecal calprotectin and C-reactive protein in patients with suspected small-bowel Crohn's disease

OBJECTIVE

Capsule endoscopy (CE) is a sensitive method for detecting inflammatory lesions in the small bowel. Such lesions may be due to Crohn's disease but also to other causes and a histological diagnosis may be difficult to achieve in the small bowel. The aim of the study was to find a possible correlation between capsule endoscopic findings, biochemical parameters, and symptoms in patients with suspected or known small-bowel Crohn´s disease.

MATERIALS AND METHODS

Thirty patients with inflammatory lesions in the small bowel diagnosed by CE were included. CE findings of inflammation were graded using the Lewis score. C-reactive protein (CRP) and fecal calprotectin were used as biochemical parameters. Symptoms were graded using the Harvey-Bradshaw index. The patients were followed up after 9 months with a second CE, CRP, fecal calprotectin, and Harvey-Bradshaw index.

RESULTS

There was a significant persistent correlation between endoscopic inflammation and fecal calprotectin (p = 0.003 at inclusion and p < 0.001 at follow-up). CRP was correlated to endoscopic inflammation at inclusion (p = 0.006), but not at follow-up. Symptoms were not correlated with endoscopic inflammation.

CONCLUSION

Inflammatory lesions in the small bowel diagnosed by CE in patients with suspected Crohn´s disease are correlated to fecal calprotectin and CRP, but not to symptoms.

Urgent double balloon endoscopy provides higher yields than non-urgent double balloon endoscopy in overt obscure gastrointestinal bleeding

BACKGROUND AND STUDY AIMS

In overt obscure gastrointestinal bleeding (OV), double balloon endoscopy (DBE) is recommended as one of the most important investigations as it can provide both diagnosis and treatment. However, there is no set standard on the timing of DBE in OV. The aim of this study was to compare the diagnostic and therapeutic yields between urgent and non-urgent DBE in patients with OV.

PATIENTS AND METHODS

Between January 2006 and February 2013, 120 patients with OV who underwent DBE were retrospectively reviewed. An urgent DBE was defined as DBE performed within 72 h from the last visible gastrointestinal bleeding (n = 74) whereas a non-urgent DBE was defined as DBE performed after 72 h (n = 46). Diagnostic yields, therapeutic impact and clinical outcomes were evaluated.

RESULTS

Diagnostic yield in urgent DBE was significantly higher than that in non-urgent DBE (70 % versus 30 %; P < 0.05). Urgent DBE offered significantly more therapies including endoscopic, angiographic embolization, and surgery than non-urgent DBE (54 % versus 15 %; P < 0.001). Endoscopic therapy was performed in 43 % of urgent-DBE patients whereas only 13 % of patients in the other group received endoscopic therapy (P < 0.01). In patients with identified bleeding sources, the rebleeding rate was lower in patients who underwent urgent DBE than in those who underwent non-urgent DBE (10 % versus 29 %, NS).

CONCLUSIONS

Regarding diagnostic and therapeutic impacts in OV, our retrospective study showed that urgent DBE is better than non-urgent DBE. The recurrent bleeding rate in patients undergoing urgent DBE tended to be lower.

Role of interventional radiology in the management of acute gastrointestinal bleeding

Acute gastrointestinal bleeding (GIB) can lead to significant morbidity and mortality without appropriate treatment. There are numerous causes of acute GIB including but not limited to infection, vascular anomalies, inflammatory diseases, trauma, and malignancy. The diagnostic and therapeutic approach of GIB depends on its location, severity, and etiology. The role of interventional radiology becomes vital in patients whose GIB remains resistant to medical and endoscopic treatment. Radiology offers diagnostic imaging studies and endovascular therapeutic interventions that can be performed promptly and effectively with successful outcomes. Computed tomography angiography and nuclear scintigraphy can localize the source of bleeding and provide essential information for the interventional radiologist to guide therapeutic management with endovascular angiography and transcatheter embolization. This review article provides insight into the essential role of Interventional Radiology in the management of acute GIB.

Small-bowel capsule endoscopy: a ten-point contemporary review

The introduction of capsule endoscopy (CE) in clinical practice increased the interest for the study of the small-bowel. Consequently, in about 10 years, an impressive quantity of literature on indications, diagnostic yield (DY), safety profile and technical evolution of CE has been published as well as several reviews. At present time, there are 5 small-bowel capsule enteroscopy (SBCE) models in the worldwide market. Head-to-head trials have showed in the great majority of studies comparable results in terms of DY, image quality and completion rate. CE meta-analyses formed the basis of national/international guidelines; these guidelines place CE in a prime position for the diagnostic work-up of patients with obscure gastrointestinal bleeding, known and/or suspected Crohn's disease and possible small-bowel neoplasia. A 2-L polyethylene glycol-based purge, administered the day before the procedure, is the most widely practiced preparation regimen. Whether this regimen can be further improved (i.e., by further decreasing its volume, changing the timing of administration, coupling it with prokinetics and/or other factors) or if it can really affect the DY, is still under discussion. Faecal calprotectin has been used in SBCE studies in two settings: in patients taking non-steroidal anti-inflammatory drugs, to evaluate the type and extent of mucosal damage and, more importantly from a clinical point of view, in patients with known or suspected Crohn's disease for assessment of inflammation activity. Although there is still a lot of debate around the exact reasons of SBCE poor performance in various small-bowel segments, it is worth to remember that the capsule progress is non-steerable, hence more rapid in the proximal than in lower segments of the small-bowel. Capsule aspiration, a relatively unexpected complication, has been reported with increasing frequency. This is probably related with the increase in the mean age of patients undergoing CE. CE video review is a time-consuming procedure. Therefore, several attempts have been made to develop technical software features, in order to make CE video analysis easier and shorter (without jeopardizing its accuracy). Suspected Blood Indicator, QuickView and Fujinon Intelligent Chromo Endoscopy are some of the software tools that have been checked in various clinical studies to date.