The anatomic spectrum of intestinal atresia The anatomic spectrum of intestinal atresia. Type I is a stenosis or mucosal web. Type II, a fibrous cord between two bowel ends. Type IIIa, blind-ending proximal and distal bowel loops with a V-shaped mesenteric defect. Type IIIb (apple peel deformity, Christmas tree deformity) consists of a blind ending proximal jejunum, absence of a large portion of the midgut, and a terminal ileum that is coiled around its ileocolic blood supply. Type IV, multiple atresias of any kind. (Reproduced, with permission, from Grosfeld JL et al: Operative management of intestinal atresia based on pathologic findings. J Pediatr Surg. 1979 June;14(3):368–375.) Source: Pediatric Surgery, CURRENT Diagnosis & Treatment: Surgery, 14e Citation: Doherty GM. CURRENT Diagnosis & Treatment: Surgery, 14e; 2015 Available at: https://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/Books/1202/doh_ch43_f010.png&sec=71529444&BookID=1202&ChapterSecID=71529153&imagename= Accessed: October 16, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved