RT Journal Article T1 International multicenter study comparing demographics, therapy and outcomes in bleeding from Mallory Weiss tears and peptic ulcers. A1 Tham, Jennifer E A1 Lynch, Lucy A1 Laursen, Stig B A1 Laine, Loren A1 Dalton, Harry R A1 Ngu, Jeffrey A1 Redondo-Cerezo, Eduardo A1 Schultz, Michael A1 Murray, Iain A1 Michell, Nick A1 Morris, Alan J A1 Nielsen, Michael M A1 Stanley, Adrian J AB Background and study aims  Mallory Weiss tears (MWTs) are relatively uncommon causes of upper gastrointestinal bleeding (UGIB), and patients are generally considered at low risk of poor outcome, although data are limited. There is uncertainty about use of endoscopic therapy. We aimed to describe and compare an international cohort of patients presenting with UGIB secondary to MWT and peptic ulcer bleeding (PUB). Patients and methods  From an international dataset of patients undergoing endoscopy for acute UGIB at seven hospitals, we assessed patients with MWT bleeding, including the endoscopic stigmata and endoscopic therapy applied. We compared baseline parameters, rebleeding rate, and 30-day mortality between patients with MWT and PUB. Results  A total of 3648 patients presented with UGIB, 125 of whom (3.4 %) had bleeding from a MWT. Those patients were younger (61 vs 69 years, P   SN 2364-3722 YR 2022 FD 2022-05-13 LK http://hdl.handle.net/10668/19657 UL http://hdl.handle.net/10668/19657 LA en DS RISalud RD Apr 8, 2025