Schematic representation of the two types of gastric volvulus: organoaxial volvulus occurs around the line A–A and mesenteroaxial volvulus occurs around the line B–B. Schematic representation of the two types of gastric volvulus: organoaxial volvulus occurs around the line A–A and mesenteroaxial volvulus occurs around the line B–B. P Manikoth et al. Arch Dis Child Fetal Neonatal Ed 2004;89:F388-F389 Copyright © BMJ Publishing Group Ltd & Royal College of Paediatrics and Child Health. All rights reserved.