TY - CHAP M1 - Book, Section TI - Chapter 402. Omphalo-Mesenteric Duct Remnants A1 - Klinkner, Denise B. A1 - Gourlay, David M. A2 - Rudolph, Colin D. A2 - Rudolph, Abraham M. A2 - Lister, George E. A2 - First, Lewis R. A2 - Gershon, Anne A. Y1 - 2011 N1 - T2 - Rudolph's Pediatrics, 22e AB - An “unusual” diverticulum of the small intestine was first described by Fabricius Hildanus in 1598, but Johannes Meckel wrote the first definitive description of the Meckel diverticulum in 1809. The vitelline (or omphalo-mesenteric) connects the yolk sac to the primitive gut. It normally involutes by the ninth week of gestation, but persistence of all or portions of this duct can result in a Meckel diverticulum or other abnormalities of the omphalomesenteric duct, such as omphalomesenteric fistula, omphalomesenteric cyst, umbilical sinus, or mesodiverticular bands.1 SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/10/03 UR - accesspediatrics.mhmedical.com/content.aspx?aid=7036744 ER -