Endoscopic recanalization of complete esophageal obstruction.

BACKGROUND AND AIMS: Complete esophageal obstruction (CEO) is a rare complication after radiochemotherapy that dramatically impairs quality of life. Within this study, we assessed the outcome of two different endoscopic techniques for lumen restoration in patients with CEO. METHODS: 17 patients were included. Esophageal recanalization was performed in an antegrade approach (Group A) or through combined antegrade and retrograde recanalization and dilatation (CARD, Group B). Technical success, complications, and dysphagia development during follow-up (FU) were compared between the groups. RESULTS: In Group A (n = 6), esophageal recanalization was performed by a single endoscopist with a median duration of 47 min. In two patients, antegrade recanalization led to formation of a false lumen (i.e., submucosal tunneling) followed by mediastinitis. In Group B, 21 CARD procedures were performed in 11 patients with a technical success rate of 100%. Procedure time was longer compared to Group A; however, no intra- or postprocedural complications were observed in Group B. CONCLUSIONS: In our experience and cohort, CARD was a successful procedure for recanalization of CEO, which exhibits a more favorable safety profile over antegrade recanalization. Further randomized studies to evaluate the treatment of CEO with CARD are needed.

Prediction of clinical outcomes in Crohn's disease by using confocal laser endomicroscopy: results from a prospective multicenter study.

BACKGROUND AND AIMS: Assessment of prognostic factors in patients with Crohn's disease (CD) is of pivotal importance for early intervention and "treat-to-target" strategies. Confocal laser endomicroscopy (CLE) enables on-demand in vivo characterization of mucosal inflammatory and architectural changes during endoscopy. We prospectively assessed the value of CLE for prediction of clinical outcome parameters in CD. METHODS: Consecutive patients with CD undergoing colonoscopy were included in a multicenter study. Confocal imaging focused on 2 highly reproducible histologic hallmarks of active colonic inflammation: focal cryptitis and crypt architectural abnormality. We evaluated whether CLE, CD endoscopic index of severity (CDEIS), serum C-reactive protein (CRP), and CD activity index (CDAI) were associated with the risk of medical treatment escalation, transmural adverse events, and CD-related hospitalization or surgery during a 4-year follow-up. RESULTS: Among 49 patients (53% men, median age, 39 years), baseline CRP was ≥5 mg/L in 47%, CDEIS ≥3 in 75%, and CDAI >150 in 51%. Focal cryptitis and crypt architectural abnormality were observed in 63% (CLE+ group). CLE+ patients showed an increased incidence of medical treatment escalation (P < .001; relative risk [RR] = 3.27) and transmural lesions (P = .025; RR = 1.70), whereas patients with CRP ≥5 mg/L had increased CD-related hospitalization and surgery (P = .020, RR = 2.71) at 1-year follow-up. No further association with prognostic clinical outcomes was found over the 1-year follow-up as well as for CDEIS and CDAI at any time. CONCLUSIONS: CLE reveals CD-related features of mucosal inflammation and allows for early prediction of relevant clinical outcomes. Further studies should now address whether this promising prognostic tool could refine the timing of treatment strategies in patients with CD.

In vivo real-time assessment of colorectal polyp histology using an optical biopsy forceps system based on laser-induced fluorescence spectroscopy.

BACKGROUND AND STUDY AIMS: In order to reduce time, costs, and risks associated with resection of diminutive colorectal polyps, the American Society for Gastrointestinal Endoscopy (ASGE) recently proposed performance thresholds that new technologies should meet for the accurate real-time assessment of histology of colorectal polyps. In this study, we prospectively assessed whether laser-induced fluorescence spectroscopy (LIFS), using the new WavSTAT4 optical biopsy system, can meet the ASGE criteria. PATIENTS AND METHODS: 27 patients undergoing screening or surveillance colonoscopy were included. The histology of 137 diminutive colorectal polyps was predicted in real time using LIFS and findings were compared with the results of conventional histopathological examination. The accuracy of predicting polyp histology with WavSTAT4 was assessed according to the ASGE criteria. RESULTS: The overall accuracy of LIFS using WavSTAT4 for predicting polyp histology was 84.7 % with sensitivity, specificity, and negative predictive value (NPV) of 81.8 %, 85.2 %, and 96.1 %. When only distal colorectal diminutive polyps were considered, the NPV for excluding adenomatous histology increased to 100 % (accuracy 82.4 %, sensitivity 100 %, specificity 80.6 %). On-site, LIFS correctly predicted the recommended surveillance intervals with an accuracy of 88.9 % (24/27 patients) when compared with histology-based United States guideline recommendations; in the 3 patients for whom LIFS- and histopathology-based recommended surveillance intervals differed, LIFS predicted shorter surveillance intervals. CONCLUSIONS: From the data of this pilot study, LIFS using the WavSTAT4 system appears accurate enough to allow distal colorectal polyps to be left in place and nearly reaches the threshold to "resect and discard" them without pathologic assessment. WavSTAT4 therefore has the potential to reduce costs and risks associated with the removal of diminutive colorectal polyps.

Digital Chromoendoscopy With i-Scan for In Vivo Prediction of Advanced Colorectal Neoplasia: A Multicenter Study.

BACKGROUND: Recent studies have analyzed the potential of advanced endoscopic imaging techniques for differentiating hyperplastic and adenomatous colorectal lesions. Latest endoscopic resection techniques now also allow for treatment of more advanced staged lesions including treatment of early cancerous lesions. AIMS: To assess the potential of the i-scan technology to differentiate between adenomatous polyps and advanced staged neoplasia. METHODS: Consecutive patients undergoing colonoscopy at a tertiary referral center were included. After a dedicated training, participating endoscopists underwent a review of 298 unknown images of colonic lesions to assess colorectal lesion histology. RESULTS: Overall accuracy for prediction of advanced staged neoplasia was 92.2% (sensitivity: 94.2%, specificity 90.9%). The positive and negative predictive values were calculated as 87.5% and 95.9%, respectively. The κ-value for differentiating adenomatous polyps and advanced staged neoplasia was 0.8193 (0.7894 to 0.8492). Intraobserver agreement was calculated with a κ-value of 0.9301 (0.8875 to 0.9727). CONCLUSIONS: Accurate interpretation of i-scan images for prediction of advanced colorectal neoplasia can successfully be performed even by nonexpert endoscopists with a high overall accuracy and excellent interobserver agreements.

High-definition endoscopy with digital chromoendoscopy for histologic prediction of distal colorectal polyps.

BACKGROUND: Distal diminutive colorectal polyps are common and accurate endoscopic prediction of hyperplastic or adenomatous polyp histology could reduce procedural time, costs and potential risks associated with the resection. Within this study we assessed whether digital chromoendoscopy can accurately predict the histology of distal diminutive colorectal polyps according to the ASGE PIVI statement. METHODS: In this prospective cohort study, 224 consecutive patients undergoing screening or surveillance colonoscopy were included. Real time histology of 121 diminutive distal colorectal polyps was evaluated using high-definition endoscopy with digital chromoendoscopy and the accuracy of predicting histology with digital chromoendoscopy was assessed. RESULTS: The overall accuracy of digital chromoendoscopy for prediction of adenomatous polyp histology was 90.1 %. Sensitivity, specificity, positive and negative predictive values were 93.3, 88.7, 88.7, and 93.2 %, respectively. In high-confidence predictions, the accuracy increased to 96.3 % while sensitivity, specificity, positive and negative predictive values were calculated as 98.1, 94.4, 94.5, and 98.1 %, respectively. Surveillance intervals with digital chromoendoscopy were correctly predicted with >90 % accuracy. CONCLUSIONS: High-definition endoscopy in combination with digital chromoendoscopy allowed real-time in vivo prediction of distal colorectal polyp histology and is accurate enough to leave distal colorectal polyps in place without resection or to resect and discard them without pathologic assessment. This approach has the potential to reduce costs and risks associated with the redundant removal of diminutive colorectal polyps. TRIAL REGISTRATION: ClinicalTrials NCT02217449.

Wireless capsule endoscopy of the small intestine: a review with future directions.

PURPOSE OF REVIEW: Here, we review the clinical applications of small bowel capsule endoscopy. Moreover, we provide an outlook on the exceptional future developments of small bowel capsule endoscopy. We discuss clinical algorithms for diagnosis of small bowel diseases. Multiple studies have shown the potential of capsule endoscopy for identification of the bleeding source located in the small bowel and the increased diagnostic yield over radiographic studies. Capsule endoscopy could detect villous atrophy and severe complications in patients with nonresponsive celiac disease. In addition, small bowel capsule endoscopy was proven as a valid tool to diagnose polyps and tumors and Crohn's disease. SUMMARY: Major current clinical indications of capsule endoscopy in the small bowel include evaluation of obscure gastrointestinal bleeding, diagnosis and surveillance of small bowel polyps and tumors, celiac disease and Crohn's disease. Recent developments have also passed the way for small bowel capsule endoscopy to become a therapeutic instrument.

Eosinophilic gastroenteritis with refractory ulcer disease and gastrointestinal bleeding as a rare manifestation of seronegative gastrointestinal food allergy.

Gastrointestinal bleeding and iron deficiency anaemia may cause severe symptoms and may require extensive diagnostics and substantial amounts of health resources.This case report focuses on the clinical presentation of a 22 year old patient with recurrent gastrointestinal bleeding from multilocular non-healing ulcers of the stomach, duodenum and jejunum over a period of four years. Extensive gastroenterological and allergological standard diagnostic procedures showed benign ulcerative lesions with tissue eosinophilia, but no conclusive diagnosis. Multiple diagnostic procedures were performed, until finally, endoscopically guided segmental gut lavage identified locally produced, intestinal IgE antibodies by fluoro-enzyme-immunoassay.IgE antibody concentrations at the intestinal level were found to be more-fold increased for total IgE and food-specific IgE against nuts, rye flour, wheat flour, pork, beef and egg yolk compared with healthy controls.Thus, a diet eliminating these allergens was introduced along with antihistamines and administration of a hypoallergenic formula, which resulted in complete healing of the multilocular ulcers with resolution of gastrointestinal bleeding. All gastrointestinal lesions disappeared and total serum IgE levels dropped to normal within 9 months. The patient has been in remission now for more than two years.Eosinophilic gastroenteritis (EG) is well known to induce refractory ulcer disease. In this case, the mechanisms for intestinal damage and gastrointestinal bleeding were identified as local gastrointestinal type I allergy. Therefore, future diagnostics in EG should also be focused on the intestinal level as identification of causative food-specific IgE antibodies proved to be effective to induce remission in this patient.

NLRP3 Inhibition Leads to Impaired Mucosal Fibroblast Function in Patients with Inflammatory Bowel Diseases.

BACKGROUND AND AIMS: Inflammatory bowel diseases (IBD) are characterized by mucosal inflammation and sequential fibrosis formation, but the exact role of the hyperactive NLRP3 inflammasome in these processes is unclear. Thus, we studied the expression and function of the NLRP3 inflammasome in the context of inflammation and fibrosis in IBD. METHODS: We analysed intestinal NLRP3 expression in mucosal immune cells and fibroblasts from IBD patients and NLRP3-associated gene expression via single-cell RNA sequencing and microarray analyses. Furthermore, cytokine secretion of NLRP3 inhibitor treated blood and mucosal cells, as well as proliferation, collagen production, and cell death of NLRP3 inhibitor treated intestinal fibroblasts from IBD patients were studied. RESULTS: We found increased NLRP3 expression in the inflamed mucosa of IBD patients and NLRP3 inhibition led to reduced IL-1ß and IL-18 production in blood cells and diminished the bioactive form of mucosal IL-1ß. Single cell analysis identified overlapping expression patterns of NLRP3 and IL-1ß in classically activated intestinal macrophages and we also detected NLRP3 expression in CD163+ macrophages. In addition, NLRP3 expression was also found in intestinal fibroblasts from IBD patients. Inhibition of NLRP3 led to reduced proliferation of intestinal fibroblasts, which was associated with a marked decrease in production of collagen type I and type VI in IBD patients. Moreover, NLRP3 inhibition in intestinal fibroblasts induced autophagy, a cellular process involved in collagen degradation. CONCLUSIONS: In the presented study, we demonstrate that inhibiting NLRP3 might pave the way for novel therapeutic approaches in IBD, especially to prevent the severe complication of intestinal fibrosis formation.

Nematode-induced interference with the anti-Plasmodium CD8+ T-cell response can be overcome by optimizing antigen administration.

Malaria is still responsible for up to 1 million deaths per year worldwide, highlighting the need for protective malaria vaccines. Helminth infections that are prevalent in malaria endemic areas can modulate immune responses of the host. Here we show that Strongy-Ioides ratti, a gut-dwelling nematode that causes transient infections, did not change the efficacy of vaccination against Plasmodium berghei. An ongoing infection with Litomosoides sigmodontis, a tissue-dwelling filaria that induces chronic infections in BALB/c mice, significantly interfered with vaccination efficacy. The induction of P. berghei circumspor-ozoite protein (CSP)-specific CD8(+) T cells, achieved by a single immunization with a CSP fusion protein, was diminished in L. sigmodontis-infected mice. This modulation was reflected by reduced frequencies of CSP-specific CD8(+) T cells, reduced CSP-specific IFN-y and TNF-a production, reduced CSP-specific cytotoxicity, and reduced protection against P. berghei challenge infection. Implementation of a more potent vaccine regime, by first priming with CSP-expressing recombinant live Salmonella prior to CSP fusion protein immunization, restored induction of CSP-specific CD8(+) T cells and conferred almost sterile immunity to P. berghei challenge infection also in L. sigmodontis-infected mice. In summary, we show that appropriate vaccination regimes can overcome helminth-induced interference with vaccination efficacy.

Mitochondrial lipoic acid scavenging is essential for Plasmodium berghei liver stage development.

Lipoic acid is an essential cofactor for enzymes that participate in key metabolic pathways in most organisms. While in mammalian cells lipoylated proteins reside exclusively in the mitochondria, apicomplexan parasites of the genus Plasmodium harbour two independent lipoylation pathways in the mitochondrion and the apicoplast, a second organelle of endosymbiotic origin. Protein lipoylation in the apicoplast relies on de novo lipoic acid synthesis while lipoylation of proteins in the mitochondrion depends on scavenging of lipoic acid from the host cell. Here, we analyse the impact of lipoic acid scavenging on the development of Plasmodium berghei liver stage parasites. Treatment of P. berghei-infected HepG2 cells with the lipoic acid analogue 8-bromo-octanoic acid (8-BOA) abolished lipoylation of mitochondrial enzyme complexes in the parasite while lipoylation of apicoplast proteins was not affected. Parasite growth as well as the ability of the parasites to successfully complete liver stage development by merosome formation were severely impaired but not completely blocked by 8-BOA. Liver stage parasites were most sensitive to 8-BOA treatment during schizogony, the phase of development when the parasite grows and undergoes extensive nuclear division to form a multinucleated syncytium. Live cell imaging as well as immunofluorescence analysis and electronmicroscopy studies revealed a close association of both host cell and parasite mitochondria with the parasitophorous vacuole membrane suggesting that host cell mitochondria might be involved in lipoic acid uptake by the parasite from the host cell.

Description of a new, endoscopic technique to remove the over-the-scope-clip in an ex vivo porcine model (with video).

BACKGROUND: Various studies have demonstrated the usefulness of the over-the-scope-clip (OTSC) to treat perforations, anastomotic leaks, and fistulae. Endoscopic removal of the OTSC was previously described in a series of 3 patients by using the Nd:YAG laser. OBJECTIVE: To evaluate a new endoscopic technique to remove the OTSC. DESIGN: Prospective, single-arm, pilot study in an ex vivo porcine model. INTERVENTIONS: Perforations were created by using a surgical scalpel and a blunt trocar. Then they were endoscopically closed with the OTSC. Next, the OTSC was removed under endoscopic control by inserting a 0.035-inch straight hydrophilic tip guidewire into the oval hole on the side of the OTSC jaw. Afterward, the OTSC clip was removed by pulling on the wire. RESULTS: Fifteen perforations were closed: with the OTSC. In all of the cases, the endoscopic closure of the defects was feasible and effective. Successful visualization of the oval hole of the OTSC was possible in 12 cases (80%), and guidewire cannulation was possible in all of these 12 cases (100%). Advancement of the guidewire through the OTSC and then the lumen of the stomach was accomplished in 8 cases (53.3%). In all of the cases with successful cannulation of the orifice, removal of the OTSC was managed safely. The result was an overall success rate of 53.3% (8 of 15 cases). LIMITATIONS: Ex vivo porcine model. CONCLUSIONS: Guidewire removal is a new and feasible technique to remove the OTSC. Future studies should refine the technique to enhance visualization and cannulation of the oval hole of the OTSC.

Digital Dementia Registry Bavaria-digiDEM Bayern: study protocol for a multicentre, prospective, longitudinal register study.

INTRODUCTION: Dementia is one of the most relevant widespread diseases, with a prevalence of currently 50 million people with dementia worldwide. The care of people with dementia will be one of the major challenges for healthcare systems worldwide. Digitalisation offers new possibilities to improve both dementia healthcare and health outcomes research as a fundament for national healthcare planning. The 'Digital Dementia Registry Bavaria-digiDEM Bayern' aims to improve the understanding of the complexity and long-term progression of dementia and the current care situation in Bavaria. Moreover, by offering digital services, digiDEM will actively contribute to improving the care situation in Bavaria. METHODS AND ANALYSIS: digiDEM will recruit people with dementia and their family caregivers in all administrative regions of Bavaria. All participants will undergo dementia screening prior to study inclusion in order to identify people with mild cognitive impairment and mild-to-moderate dementia. Participants will be followed up over a period of three years. Sociodemographic data, type of dementia, symptoms, diagnosis, cognitive trajectories, activities of daily living, behavioural and psychological symptoms, falls, resource utilisation, caregiver burden, quality of life, needs of people with dementia and their caregivers, mobility, use of media and sources of information will be assessed. The project will implement a digital web-based platform for data collection. Data will be collected by means of standardised online or face-to-face interviews. ETHICS AND DISSEMINATION: The study obtained ethical approval from the Ethics Committee of the Medical Faculty of Friedrich-Alexander-University Erlangen-Nürnberg (FAU) (application number: 253_20 B). Findings will be used for evidence-based decision-making for health decision-makers in order to optimise dementia healthcare in the state of Bavaria. Specific analyses will be conducted for the participating research partners. Results of the study will be published in peer-reviewed journals.

Successful cyclosporin and ustekinumab combination therapy in a patient with severe steroid-refractory ulcerative colitis.

The therapeutic management of patients with severe steroid-refractory ulcerative colitis still represents a critical clinical challenge. In this setting, cyclosporin is an effective and rapidly acting induction treatment that is applied in combination with maintenance therapeutic agents like thiopurines or vedolizumab. Here, we present the case of a 33-year-old ulcerative colitis patient with severe steroid-refractory ulcerative colitis who refused surgical intervention and previously demonstrated no long-term benefit to anti-TNF antibody, vedolizumab, cyclosporin, thiopurines or tofacitinib treatment. Intravenous cyclosporin therapy was re-initiated in the patient and, after signs of clinical response, therapy with ustekinumab was additionally applied. After 11 weeks of well tolerated cyclosporin and ustekinumab combination therapy, cyclosporin was discontinued upon clinical and endoscopic remission. Subsequently, ustekinumab treatment has been effective in maintaining remission during the follow-up period of 195 days.

Long-term partial remission of autoimmune thrombocytopenia in a patient treated with the anti-tumor necrosis factor-alpha antibody infliximab for refractory fistulizing Crohn's disease.

BACKGROUND: Up to the present date, the treatment of recurrent chronic fistulas occurring with Crohn's disease represents a challenging task for both internists and surgeons alike. METHODS: Conservative methods of treatment using steroids, dietotherapy, antibiotics or immunosuppressive agents are not particularly effective in treating fistulas. Treatment with anti-tumor necrosis factor-alpha (TNFalpha) antibodies results in more remissions of fistulas. However, its use requires appropriate medical experience and causes substantial costs. Surgical procedures such as fistula sanitation or protective ileostomy are often obfuscated by the recurrence of the condition. The efficiency of anti-TNFalpha antibodies for the treatment of active Crohn's disease has been evidenced through several multicenter, double-blind, placebo-controlled studies. RESULTS: Here we report the successful anti-TNFalpha treatment of a patient suffering from chronic, fistulizing, therapy-resistant Crohn's disease and a concomitant chronic autoimmune thrombocytopenia. The chimeric anti-TNFalpha antibody infliximab markedly reduced the disease activity of Crohn's disease, and, in addition, substantially increased the platelet counts. After infliximab application, no other treatment of autoimmune thrombocytopenia was required. After infliximab therapy, autoantibodies to dsDNS could be observed. However, there were no signs of a lupus-like disease. CONCLUSION: This report indicates a favorable therapeutic response of autoimmune thrombocytopenia associated to Crohn's disease.

Treatment of Zenker's diverticulum using a novel grasping-type scissors forceps allows fast, safe, and effective endoscopic diverticulotomy.

BACKGROUND AND STUDY AIMS: Although several endoscopic techniques have been described for Zenker's diverticulotomy, no standardized endoscopic approach has been established in clinical routine to date. This study aimed to assess the efficacy and safety of endoscopic diverticulotomy using the Clutch Cutter. PATIENTS AND METHODS: Cricopharyngeal myotomy was performed in six prospectively enrolled patients with symptomatic Zenker's diverticulum, using the Clutch Cutter. Procedural details such as duration, complications, and technical success were recorded and compared to the outcomes of 15 patients who received needle-knife-based myotomy. RESULTS: Myotomy with the Clutch Cutter was feasible in all six patients with complete diverticulotomy in a single session in all patients. Mean procedure time of the Clutch Cutter myotomy was 19 minutes without major complications. During follow-up, one patient had diverticulum recurrence after 10 months, which was successfully re-treated. Mean procedure time with the needle-knife was 43 minutes and a mean of 2.7 myotomy sessions was required for complete diverticulotomy. CONCLUSION: Endoscopic diverticulotomy using the Clutch Cutter is safe, effective, and fast. Larger studies comparing myotomy using the Clutch Cutter with other endoscopic techniques are highly warranted.

I-scan optical enhancement for the in vivo prediction of diminutive colorectal polyp histology: Results from a prospective three-phased multicentre trial.

BACKGROUND AND AIMS: Dye-less chromoendoscopy is an emerging technology for colorectal polyp characterization. Herein, we investigated whether the newly introduced I-scan optical enhancement (OE) can accurately predict polyp histology in vivo in real-time. METHODS: In this prospective three-phased study, 84 patients with 230 diminutive colorectal polyps were included. During the first two study phases, five endoscopists assessed whether analysis of polyp colour, surface and vascular pattern under i-scan OE can differentiate in vivo between adenomatous and hyperplastic polyps. Finally, junior and experienced endoscopists (JE, EE, each n = 4) not involved in the prior study phases made a post hoc diagnosis of polyp histology using a static i-scan OE image database. Histopathology was used as a gold-standard in all study phases. RESULTS: The overall accuracy of i-scan OE for histology prediction was 90% with a sensitivity, specificity, positive (PPV) and negative prediction value (NPV) of 91%, 90%, 86% and 94%, respectively. In high confidence predictions, the diagnostic accuracy increased to 93% with sensitivity, specificity, PPV and NPV of 94%, 91%, 89% and 96%. Colonoscopy surveillance intervals were predicted correctly in ≥ 90% of patients. In the post hoc analysis EE predicted polyp histology under i-scan OE with an overall accuracy of 91%. After a single training session, JE achieved a comparable diagnostic performance for predicting polyp histology with i-scan OE. CONCLUSION: The histology of diminutive colorectal polyps can be accurately predicted with i-scan OE in vivo in real-time. Furthermore, polyp differentiation with i-scan OE appears to require only a short learning curve.

Processes involving selective precipitation for the recovery of purified pectins from mango peel.

Three methods for the recovery of purified pectins from directly dried mango peel were developed, using selective precipitation of mango pectin in propan-2-ol (IPA) of adequate volume concentrations for purification. Yields, composition, macromolecular and gelling properties of the resultant pectins were compared. Effluent analyses proved postextractive removal of fruit exudate arabinogalactans. The recovery processes involved (A) washing of raw-pectin powder in IPA of defined volume concentration, (B) fractional alcoholic precipitation of dissolved raw pectin, or (C) selective pectin precipitation from the hot-acid extract of mango peel in adequately diluted IPA. High galacturonic acid contents (≥ 721g/kg) and intrinsic viscosities (≥ 320mL/g) enabled ∼2.2-fold gelling capacities compared to raw mango pectin, which resulted from the standard procedure mimicking industrial pectin recovery from established sources. Removal of the predominant impurities (coextractable exudate arabinogalactans, ash) diminished the yields to ∼49% of the raw-pectin yield. Technical feasibility of the proposed procedures was discussed.

A Severe Case of Tuberculosis Radiologically and Endoscopically Mimicking Colorectal Cancer with Peritoneal Carcinomatosis.

Although generally rising in incidence, intestinal tuberculosis is still rare in western countries and due to unspecific manifestations mainly as ulcerations on endoscopy, diagnosis of intestinal tuberculosis is challenging. Within this report, we describe a case of severe intestinal tuberculosis radiologically and endoscopically masquerading as colorectal cancer with peritoneal carcinomatosis. Our case exemplifies that intestinal tuberculosis needs to be considered as a differential diagnosis in patients at risk and that undelayed and sensitive diagnosis of intestinal tuberculosis is of central importance for avoiding unfavorable disease outcome.