angular incisure angular incisure the angular incisure (or angular notch) is a small notch on the stomach. it is located on the lesser curvature of the stomach near the pyloric end. its location varies depending on how distended the stomach is. angular incisureoutline of stomach, with angular incisure stated as "incisura angularis" near center.detailssystemgastrointestinal tractarteryright gastric artery, left gastric arteryveinright gastric vein, left gastric veinnervevagusidentifierslatinincisura angularista98a05.5.01.006ta22906fma14573anatomical terminology the angular incisure is used as a separation point between the right and left portions of the stomach, the body and the pylorus. an imaginary line drawn perpendicular to the lesser curvature of the stomach through the angular incisure makes up the boundary between the body of the stomach and pylorus.