A Rare but Life-Threatening Complication of Direct Endoscopic Necrosectomy: Tension Pneumoperitoneum With Pneumothorax and Hypercapnia due to Walled-Off Necrosis Rupture. - Otsuka Y; Minaga K; Hara A; Takenaka M; Nobori C; Murase T; Matsumoto I; Kudo M (Case reports in gastrointestinal medicine, 2026)