TY - CHAP M1 - Book, Section TI - Paraesophageal Hernia, Laparoscopic and Robotic A1 - Ellison, E. Christopher A1 - Zollinger, Jr., Robert M. A1 - Pawlik, Timothy M. A1 - Vaccaro, Patrick S. A1 - Bitans, Marita A1 - Baker, Anthony S. Y1 - 2022 N1 - T2 - Zollinger’s Atlas of Surgical Operations, 11e AB - Hiatal hernias are classified as types I–IV, with types II–IV representing forms of paraesophageal hernia (PEH) (FIGURE 1). Patients with PEH may develop gastric volvulus, which is classified based on the axis of rotation (FIGURE 2). Organoaxial volvulus is the most common type, and it accounts for almost all cases of acute gastric volvulus (FIGURE 2A). This involves rotation of the stomach around the anatomic (longitudinal) axis, represented as a line drawn from the cardia to the pylorus, frequently resulting in gastric strangulation. In mesoentericoaxial volvulus, the antrum of the stomach rotates anteriorly and superiorly around a transverse axis that extends from the middle of the lesser curvature to the middle of the greater curvature (FIGURE 2B). The rotation is typically incomplete and results in intermittent gastric obstruction rather than acute strangulation. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accesssurgery.mhmedical.com/content.aspx?aid=1187821117 ER -