BIN, C. I.; RAMALINGAM, T. Rare cause of pneumoperitoneum: perforated appendicitis mimicking upper gastrointestinal perforation . International Surgery Journal, [S. l.], v. 13, n. 11, p. 2230–2232, 2026. DOI: 10.18203/2349-2902.isj20263857. Disponível em: https://www.ijsurgery.com/index.php/isj/article/view/12343. Acesso em: 28 oct. 2026.