Introduction

International guidelines recommend endoscopic submucosal dissection (ESD) for en-bloc resection of rectal lesions suspected of submucosal invasive cancer (SMI). ESD achieves favorable outcomes for benign lesions and early rectal cancers (ERC) with superficial (<1000μm) SMI. However, for ERCs with deep (≥1000μm) SMI, the rate of histologically radical (R0) resection remains suboptimal, at maximum 64% for SM2-3 lesions, even in expert centres. The muscle-retracting sign (MRS) has emerged as a potential endoscopic marker of deep SMI detected during endoscopic resection. Predicting deep SMI is particularly relevant in rectal lesions, as incorrect selection of resection modality may lead to non-radical endoscopic resections and the need for surgical salvage, which carries significant morbidity. To address some of these limitations, we applied the novel pocket-detection method (PDM) for MRS detection. This approach enhances visualization of the submucosal space and facilitates early identification of the MRS.

Aims & Methods

The aim of this study was to evaluate the diagnostic accuracy of the MRS detected using the PDM as an innovative approach for identifying deeply invasive ERC during endoscopic resection of rectal lesions.
In this prospective, observational, single-centre study consecutive rectal lesions that underwent endoscopic resection using the PDM between August 2023 and March 2025 were included. Directionality of initial submucosal dissection targeted any morphological or surface vascular pattern at risk of deep SMI to attempt MRS identification. Histopathology was the reference standard for MRS diagnostic accuracy in detecting deep SMI. Deep SMI was defined as ≥1000μm invasion from the muscularis mucosa at histopathology.

Results

38 rectal lesions, median size 30 mm (IQR 20-40), were included. PDM for MRS detection was successful in all cases, with MRS-positive in 15/38 (39.5%). Deep SMI was confirmed in 15/38 (39.5%). Accuracy of MRS-positive for deep SMI detection was 84.2%, (95% CI 69.6-92.6%), sensitivity 80% (95% CI 54.8-92.9%), specificity 87% (95% CI 67.9-95.5%), positive predictive value 80% (95% CI 54.8-92.9%), negative predictive value 87% (95% CI 67.9-95.5%), positive likelihood ratio 6.13, negative likelihood ratio 0.23, area under the curve 0.83 (95% CI: 0.71–0.96). The rate of R0 resection was 92.1% (35/38).

Conclusion

MRS detected using the PDM demonstrated moderate-to-high accuracy in predicting deep SMI in early rectal cancer. This finding may allow selection of endoscopic resection strategy based on invasion depth.

Introduction

Post endoscopy upper gastrointestinal cancers (PEUGIC) are often missed opportunities to diagnose earlier or even prevent cancer. Up to 71% of PEUGIC are potentially avoidable, but identifying and investigating them can be challenging. A national process for identifying all PEUGIC in the English National Health Service and performing root cause analysis was developed.

Aims & Methods

Potential PEUGIC between 2017 and 2023 occurring 3-36 months after an index endoscopy which did not result in a cancer diagnosis were identified from National Cancer Registration Dataset and Hospital Episode Statistics held by the National Cancer Registration and Analysis Service. Data from local root cause analysis were uploaded onto a secure portal for national analysis. PEUGIC following surveillance endoscopies were excluded from this analysis. Logistic regression analysis was used to identify associations with outcomes of interest.

Results

3151 potential PEUGIC were examined by local reviewers in 144 English hospitals. 635 (20%) were excluded on local review and data were available for 2516 PEUGIC. 1897 (75.4%) PEUGIC followed diagnostic, follow-up or screening endoscopies. PEUGIC sites were oesophagus 61%, stomach 34% and duodenum 5%.
Table 1 shows the summary PEUGIC root cause results analysis based on the World Endoscopy Organisation categorisation. Categories C and D were associated with poor outcomes with 29% and 23% of cases receiving curative treatment, respectively. Compared to categories A and B receiving curative treatment in 53% and 37% of cases, respectively. Squamous cell cancers accounted for 37.5% of oesophageal PEUGIC and were associated with no lesion being detected (category C or D) in the PEUGIC segment OR 1.71 (95% CI 1.21-2.43).
Findings on index endoscopy (category A or B) at later oesophageal PEUGIC: pre-malignant lesion 23% (e.g. Barrett’s), cancer associated lesion 20% (e.g. ulcer) and other oesophageal focal lesions 15%. Findings on index endoscopy in gastric PEUGIC: cancer associated lesion 26%, pre-malignant lesion 7% and other gastric focal lesions 18%. 45% of the index endoscopies were classified as inadequate. Patient harm and adverse treatment outcomes were associated with an inadequate index endoscopy OR 1.56 (95% CI 1.28-1.91). The most common reason for inadequate endoscopy was inadequate management of lesions identified, which were most likely to be cancer associated lesions OR 1.43 (95% CI 1.11-1.69), specifically oesophageal strictures (24%) and gastric ulcers (23%).
Gastric diagnostic PEUGIC were diagnosed with more advanced cancer (40% stage 4 at diagnosis vs 30% oesophageal PEUGIC). Treatment following cancer diagnosis was adversely affected in 42% of PEUGIC. Reviewers considered that 57% of PEUGIC were at least possibly avoidable and 9% led to premature death.

Table 1 Root causes of all diagnostic PEUGIC

Conclusion

Abnormalities in the area of the later cancer were detected at index endoscopy in 59% of PEUGIC. Inadequate lesion assessment, endoscopy and/or decision making was noted in 45% of PEUGIC, which adversely affected treatment outcome. Oesophageal squamous cell cancer was a common cause of PEUGIC, suggesting issues with lesion recognition in this cancer. Many patients had incurable disease when diagnosed and treatment was adversely affected in 42%.

Introduction

Colorectal cancer (CRC) is the most common cancer in Spain, with an estimated 44,573 new cases in 2025. The standard CRC screening strategy involves the immunological faecal occult blood test (FIT), followed by colonoscopy in positive cases. However, the low specificity of FIT results in a significant number of unnecessary colonoscopies, placing a high burden on healthcare systems. There is a growing need to explore alternative screening strategies that offer better cost-effectiveness ratios. The gut microbiota plays a key role in CRC carcinogenesis, and several bacterial species involved in this process have been identified. A diagnostic tool based on the combination of FIT (cut-off 100 ng/mL – FIT100) and a bacterial signature has been designed to detect CRC and advanced lesions (AL, defined as ≥1 cm and/or high-grade dysplasia and/or a hairy component). This tool uses qPCR to analyse the relative abundance of specific bacteria in the same stool sample used for FIT testing. Previous studies, including a proof-of-concept (N=172), confirmatory study (N=327), and clinical performance study (N=2,481), have validated the tool.

Aims & Methods

This study aims to evaluate the diagnostic performance of the bacterial signature applied to FIT100 positive participants and its potential to reduce unnecessary colonoscopies in the CRC screening program in Catalonia.
A prospective observational study was conducted in a multicentre cohort across five hospitals, including participants from the CRC screening program with a positive FIT100. Blinding was applied to the FIT, bacterial signature, colonoscopy, and biopsy. Colonoscopy-biopsy was used as the reference standard. The study included 1,453 participants, of which 48 were excluded from the analysis mainly because of poor sample conditions, resulting in a final sample of 1,405 participants. Sensitivity was defined as the proportion of true positives detected by the FIT that the bacterial signature also identifies as positive. Specificity was defined as the proportion of false positives of FIT that the bacterial signature correctly identifies as true negatives.

Results

From the 1,405 analysed cases, 44 were CRC, 472 AL, and 889 without AL. For CRC detection, the sensitivity was 95.5%, with a specificity of 18.4%. The reduction in false positives was 18.4%. For AL and CRC combined, the sensitivity was 82.6%, with a specificity of 18.4%.

Conclusion

The bacterial signature applied to FIT100 positive participants demonstrates high sensitivity for CRC detection while reducing unnecessary colonoscopies by minimizing false positives. Its implementation in the CRC screening protocol could improve the overall efficiency of the screening process. Future studies should focus on cost minimization and assess the tool's cost-effectiveness to ensure a favourable risk-benefit ratio for broader implementation.

Introduction

Gastrointestinal (GI) hemorrhage accounts for 30% of acute decompensations in cirrhotic patients, with 60% originating from variceal bleeding. Each decompensation episode carries an in-hospital mortality rate of 13%, and a 6-week mortality rate of 20%, commonly assed using Child Pugh (CP) and MELD scores. The ALBI (Albumin-Bilirubin) score, which includes only two variables, offers a simplified evaluation of liver function. However, there is limited data on its utility in predicting short-term mortality in cirrhotic patients with GI hemorrhage.

Aims & Methods

This study aimed to evaluate the association between ALBI Score with short-term mortality in cirrhotic patients with GI hemorrhage. We conducted a prospective, cross-sectional study between January and December of 2023 at Hospital Roosevelt, Guatemala, including cirrhotic patients admitted for GI hemorrhage. Informed consent was obtained from all participants. Categorical variables were analyzed using the chi-square test, normally distributed continuous variables with Student’s t-test, and non-normally distributed variables with the Mann-Whitney U test. Logistic binary regression and AUROC analysis were used to assess associations with short-term mortality. Statistical analyses were performed using SPSS.

Results

A total of 187 patients were included: 50.8% female and 49.2% male, with a mean age of 56 among survivors and 58 among non-survivors. Of these, 52.9% had a prior diagnosis of cirrhosis, while 47.1% were newly diagnosed. Cirrhosis etiology was metabolic in 50.2%, alcoholic in 42.7%, autoimmune in 4.3%, HCV in 1.6%, and HBV in 1.1%. At admission, 80.8% had no ascites and 97.3% had no hepatic encephalopathy. he causes of GI hemorrhage were 86.1% esophageal varices, 3.2% gastric varices, 9.1% gastric ulcers, and 1.6% esophagitis.
Non-survivors had significantly lower systolic blood pressure (93.90 ± 16.3 mmHg vs. 107.92 ± 17.4 mmHg; p = 0.002) and mean arterial pressure (69.50 ± 14.5 mmHg vs. 79.67 ± 11.7 mmHg; p = 0.005) compared to survivors. Non-survivors exhibited significantly higher INR (1.79 ± 0.56 vs. 1.52 ± 0.41; p = 0.026) and total bilirubin (5.85 ± 8.73 mg/dL vs. 2.02 ± 2.82 mg/dL; p = 0.031), and lower serum albumin levels (2.40 ± 0.43 g/dL vs. 3.10 ± 0.54 g/dL; p < 0.001).

Prognostic scores were significantly higher among non-survivors: MELD (19.25 ± 10.09 vs. 13.57 ± 5.47; p = 0.002), MELD-Na (20.35 ± 9.76 vs. 14.44 ± 6.42; p = 0.002), Child-Pugh (9.15 ± 2.21 vs. 7.18 ± 1.90; p < 0.001), and ALBI score (-0.96 ± 0.51 vs. -1.76 ± 0.58; p < 0.001). Additionally, the length of hospital stay was significantly shorter among non-survivors (3.90 ± 3.82 days) compared to survivors (6.59 ± 5.58 days; p = 0.001).

• Higher ALBI score was significantly associated with mortality (Risk Ratio 25.80; 95% CI: 6.75–98.67; p < 0.001),
• Hospital stay <5 days (RR 9.91; 95% CI: 2.07–47.47; p = 0.004),
• Endoscopy performed within 12 hours (RR 7.53; 95% CI: 2.01–28.15; p = 0.003).

Conclusion

The ALBI score outperforms CP and MELD scores in predicting short-term mortality (in-hospital, 4 weeks, and 6 weeks) in cirrhotic patients with GI hemorrhage. Observed mortality was 10% in-hospital, 13% at 4 weeks, and 16% at 6 weeks.

Introduction

Lynch syndrome (LS) is associated with an increased risk of upper gastrointestinal (GI) cancers. While upper GI surveillance is recommended in several guidelines, there remains international variability and ongoing debate regarding its implementation, timing, and extent. This study evaluated the incidence of gastric (GC), duodenal (DC), and jejunal cancers (JC) in LS patients using data from the German Consortium for Familial Intestinal Cancer (GCFIC). In addition, the diagnostic yield of esophagogastroduodenoscopy (EGD) and push enteroscopy (PE), performed at a tertiary care center, was retrospectively analyzed.

Aims & Methods

A total of 960 endoscopic procedures (494 EGD, 466 PE) were retrospectively analyzed in 349 LS patients documented at a tertiary care center. Push enteroscopy (PE) was performed using a colonoscope to allow deeper insertion into the small intestine, enabling inspection of the proximal jejunum. Clinically relevant findings included intestinal metaplasia, Barrett’s esophagus, adenomas, and carcinomas. These findings were systematically compared between EGD and PE to evaluate diagnostic yield. The GCFIC database was evaluated to determine cancer incidence by genotype.

Results

In the GCFIC cohort (n=2859), the majority of GC (2.2%), DC (2.1%), and JC (1.9%) occurred in high-risk pathogenic variant carriers (PGV) (MLH1, MSH2, EPCAM). However, a small proportion of cancers was also observed in low-risk PGV carriers: GC in two MSH6 carriers, DC in five patients with MSH6 or PMS2, and JC in seven low-risk carriers (MSH6: 3, PMS2: 4). In the NZET cohort, 22% of procedures and 50 % of patients revealed relevant findings. Gastric adenomas were found in 3.7%, gastric cancer in 1.1%, and intestinal metaplasia in 28% of patients. Duodenal adenomas were found in 3.7% and cancer in 0.9%. Jejunal neoplasia was detected exclusively by PE (adenomas 1.7%, cancer 0.6%).

Conclusion

Upper gastrointestinal surveillance is essential in patients with Lynch syndrome. Push enteroscopy (PE) provides diagnostic value beyond conventional esophagogastroduodenoscopy (EGD), particularly in detecting jejunal neoplasia, and should be considered in high-risk surveillance protocols.

Disclosure

Robert Hüneburg was funded by Deutsche Krebshilfe (DECADE), and Wilhelm-Sander-Stiftung.
Jacob Nattermann was funded by Wilhelm-Sander-Stiftung.