3D models of twisted pouch syndrome before and after redo IPAA. The upper panel shows a twisted pouch staple line augmented by manual segmentation before redo IPAA; the bottom panel shows 3D models of a different patient with twisted pouch syndrome before and after redo IPAA. H, head; F, feet; A, anterior; R, right; L, left; IPAA, ileal pouch-anal anastomosis; © Cleveland Clinic Foundation, 2024.