Endoscopic Submucosal Dissection in Europe: Results of 1000 Neoplastic Lesions From the German Endoscopic Submucosal Dissection Registry.

BACKGROUND AND AIMS: Endoscopic submucosal dissection (ESD) enables the curative resection of early malignant lesions and is associated with reduced recurrence risk. Due to the lack of comprehensive ESD data in the West, the German ESD registry was set up to evaluate relevant outcomes of ESD. METHODS: The German ESD registry is a prospective uncontrolled multicenter study. During a 35-month period, 20 centers included 1000 ESDs of neoplastic lesions. The results were evaluated in terms of en bloc, R0, curative resection rates, and recurrence rate after a 3-month and 12-month follow-up. Additionally, participating centers were grouped into low-volume (≤20 ESDs/y), middle-volume (20-50/y), and high-volume centers (>50/y). A multivariate analysis investigating risk factors for noncurative resection was performed. RESULTS: Overall, en bloc, R0, and curative resection rates of 92.4% (95% confidence interval [CI], 0.90-0.94), 78.8% (95% CI, 0.76-0.81), and 72.3% (95% CI, 0.69-0.75) were achieved, respectively. The overall complication rate was 8.3% (95% CI, 0.067-0.102), whereas the recurrence rate after 12 months was 2.1%. High-volume centers had significantly higher en bloc, R0, curative resection rates, and recurrence rates and lower complication rates than middle- or low-volume centers. The lesion size, hybrid ESD, age, stage T1b carcinoma, and treatment outside high-volume centers were identified as risk factors for noncurative ESD. CONCLUSION: In Germany, ESD achieves excellent en bloc resection rates but only modest curative resection rates. ESD requires a high level of expertise, and results vary significantly depending on the center's yearly case volume.

Risk factors for bleeding from gastrointestinal angiodysplasia: a case-control study in patients with bleeding and non-bleeding angiodysplasia.

OBJECTIVES: Angiodysplasia (AD) is a common source of gastrointestinal bleeding. Yet, little is known about factors forwarding bleeding in these vascular malformations. The presented study aims to determine risk factors for bleeding that occurs only in patients with symptomatic, but not with asymptomatic, AD. METHODS: Case-control study in patients with AD and either a positive or a negative history of gastrointestinal bleeding in Munich, Germany. Groups were compared by clinical, laboratory, and endoscopic features. RESULTS: 80 patients with (58, f 31, med. age 72) or without bleeding AD (22, f 12, med. age 61) were included. Bleeding from AD was significantly associated with the total number of AD (OR 1.4 (95 % CI 1.1-1.7) p = 0.01) and closure time in PFA/collagen-epinephrine test (OR 1.0 (95 % CI 1.0-1.0) p < 0.01). The total number of AD correlated significantly with age (r = 0.36; p = 0.01). AD were mainly detected in the upper small intestine (> 30 %). Although patients with aortic stenosis suffered not significantly more frequently from bleeding from AD, they demonstrated a loss of high molecular multimers of VWF. CONCLUSIONS: The amount of AD is clearly correlated to the age of the patient. A higher number of ADs and inhibition of primary hemostasis increase the risk of bleeding.