TY - CHAP M1 - Book, Section TI - Chapter 417. Disorders of the Exocrine Pancreas A1 - Werlin, Steven L. A2 - Rudolph, Colin D. A2 - Rudolph, Abraham M. A2 - Lister, George E. A2 - First, Lewis R. A2 - Gershon, Anne A. PY - 2011 T2 - Rudolph's Pediatrics, 22e AB - In the fourth week of gestation, the human pancreas develops as two outpouchings of the duodenal endoderm (Figure 381-3 and eFig. 417.1).1-3 The larger dorsal bud develops into the tail, body, and a portion of the head of the pancreas. The ventral bud fuses with the dorsal bud at about the 17th week of gestation to create the remainder of the head of the pancreas and the uncinate process. Each bud possesses its own ductal system; variations in fusion, which occurs in 15% of the population, lead to developmental anomalies. The dorsal duct forms the distal portion of the duct of Wirsung and the ventral portion forms the accessory duct of Santorini, which empties independently in about 15% of the population. Defective fusion of the two pancreatic primordia leads to a number of anatomic anomalies of the pancreatic ductal system (see also Chapter 381). Anomalies in this developmental process can have clinical implications. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/04/23 UR - accesspediatrics.mhmedical.com/content.aspx?aid=7038345 ER -