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Traditional methods have their limitations when it comes to unraveling the mysteries of the small bowel, an area historically seen as the "black box" of the gastrointestinal tract. This is where capsule endoscopy and enteroscopy have stepped in, offering a remarkable synergy that transcends the sum of their individual capabilities. From their introduction, small bowel capsule endoscopy and device-assisted enteroscopy have consistently evolved and improved, both on their own and interdependently. Each technique's history may be told as a success story, and their interaction has revolutionized the approach to the small bowel. Both have advantages that could be ideally combined into a perfect technique: safe, non-invasive, and capable of examining the entire small bowel, taking biopsies, and applying therapeutical interventions. Until the realization of this perfect tool becomes a reality, the key for an optimal approach lies in the right selection of exploration method. In this article, we embark on a journey through the intertwined development of capsule endoscopy and enteroscopy, exploring the origins, technological advancements, clinical applications, and evolving inquiries that have continually reshaped the landscape of small bowel imaging. [ABSTRACT FROM AUTHOR]

Background and Objectives: Ulcerative colitis (UC) and Crohn's disease (CD) are idiopathic inflammatory bowel diseases (IBDs) without a unique, gold standard diagnostic test. UC and Crohn's colitis are impossible to distinguish in approximately 10% of cases. The term IBD type unclassified (IBD-U) is recommended for cases of chronic colitis showing overlapping endoscopic, radiological, and biopsy histological features between UC and CD, while indetermined colitis is reserved for colectomy specimens. Our aim was to assess the role of small-bowel capsule endoscopy (SBCE) in the diagnostic work-up of IBD-U. Materials and Methods: We retrospectively studied the cases of IBD-U explored by SBCE in a tertiary referral gastroenterology center. Patients were investigated using SBCE after contraindications were excluded. Diagnostic criteria for small bowel CD consisted in more than three ulcerations, irregular ulcers, or stenosis, and the Lewis score was used for the quantification of inflammation. The immediate impact of reclassification and outcome data was recorded over a follow-up period of more than one year. Results: Twenty-eight patients with IBD-U were examined using SBCE. Nine patients had small bowel lesions that met the diagnostic criteria for CD, resulting in a reclassification rate of 32.1%. In five of these cases, the treatment was subsequently changed. In the remaining nineteen examinations, no significant findings were observed. There were no complications associated with SBCE. Median follow-up time was 32.5 months (range 12–60). During follow-up, twelve patients were classified as having UC, and seven remained as having an unclassified type; one case of colectomy, for medically refractory UC, was recorded. Conclusions: SBCE is a useful safe tool in the work-up of IBD-U, allowing reclassification in about one third of cases, with subsequent treatment modifications. SBCE may provide a definite diagnosis, enhance the comprehension of the disease's progression, and optimize the short- and long-term management strategy. [ABSTRACT FROM AUTHOR]

Background. There is no unique diagnostic test for Crohn's disease, and the diagnosis of isolated small bowel Crohn's disease (SBCD) is even more challenging, due to non-patognomonic clinical picture and low availability of accurate exploration methods. Small bowel capsule endoscopy (SBCE) revolutionized the approach of middle gastrointestinal tract, becoming the first investigation tool when small bowel pathology is suspected. Objective of the study. The aim of our study was to assess the value of SBCE in diagnosing isolated SBCD. Materials and Methods. We retrospectively studied the patients undergoing SBCE for suspected isolated SBCD, in a six-year period, including in our analysis only the patients with a minimum one-year follow-up period. We calculated the diagnostic yield of SBCE, defined as number of capsule endoscopy exams whith positive findings, and we also assessed its yearly variation in time over the six-year period. Subsequently, analyzing follow-up data, positive and negative predictive values were assessed. Results. 78 patients were investigated by SBCE for suspected isolated SBCD. SBCE showed lesions compatible with the diagnosis of SBCD in 49 patients, corresponding to a specific diagnostic yield of 62.8%, while for the remaining 29 patients (37.2%), no CD lesions were found. Following additional investigations, three of the 49 patients initially thought as having isolated SBCD were reclassified as SB lymphoma, eosinophilic gastroenteritis and intestinal tuberculosis, respectively, corresponding to a positive predictive value of 93.8%. During followup, none of the 29 patients with negative SBCE was diagnosed with CD, corresponding to a negative predictive value of 100%. We found a progressively increase of the diagnostic yield over time (from 42.6% in the first year to 70.2% in the last year of the analyzed period), corresponding the most probably to the refinement of the indication. Conclusions. Despite a relatively low diagnostic yield, SBCE has a good positive predictive value for isolated SBCD. However, as CE is a purely visual technique with no capability of taking biopsies, final diagnosis needs confirmation by additional investigations. Nevertheless, SBCE has a 100% negative predictive value, being an excellent tool for rulling out isolated SBCD. Refinement of the indication could ensure a better diagostic yield. [ABSTRACT FROM AUTHOR]

Since its introduction to clinical practice in 2001, small-bowel capsule endoscopy (SBCE) has become an important investigation procedure in many small bowel pathologies, including both suspected and known Crohn's disease (CD). SBCE has higher diagnostic yield than other radiologic and endoscopic modalities used in evaluation of patients with suspected CD. In addition, SBCE has proved useful, in a non-invasive and safe manner, as a monitoring method for evaluating the severity and extent of lesions, postoperative recurrence, and mucosal healing in patients with known CD. Monitoring of colonic inflammation in patients with ulcerative colitis (UC) using second-generation of colon capsule endoscopy (CCE-2) has also been reported. Besides its advantages, CE also has several limitations such as the inability to obtain biopsies and lack of therapeutic capabilities, hopefully to be overcome in the near future by advances in modern technologies. [ABSTRACT FROM AUTHOR]