RT Journal Article
T1 Duodenal window revisited: A histological study using human fetuses
A1 Yang, Jae Do
A1 Hwang, Hong Pil
A1 Kim, Ji Hyun
A1 Rodríguez Vázquez, José Francisco
A1 Murakami, Gen
A1 Yu, Hee Chul
A1 Cho, Baik Hwan
AB To assess the development of the duodenal window in fetuses, we examined semiserial histological sections of 59 human fetuses with a crown-rump length of 27–156 mm (∼4–18 weeks of gestation). In 44 of the 54 fetuses with horizontal sections, the duodenal window was formed by interdigitation of the anterior and posterior muscle slips from the proper duodenal circular muscle coat. The anterior slips approached the common bile duct from the anterior side and wound around the bile duct from the right aspect, whereas the posterior slips approached the main pancreatic duct from the posterior side, reaching the left or outer aspect of the duct without winding. These slips may become longitudinal muscles in the ampulla after birth. Six specimens showed variations in this typical pattern, in that the posterior muscle slips as well as the duodenal longitudinal muscle coat wound around the bile duct. In the remaining four specimens, we observed an abnormal union of the bile and pancreatic ducts, with the duodenal circular muscles suddenly ending along the window or slightly inserted into the right side of the common duct after joining. In all later-stage fetuses, the common sphincter surrounded both the bile and pancreatic ducts in the ampulla. Consequently, at and along the duodenal window, the proper duodenal circular muscle seemed to contribute to fetal sphincter formation. The window was not a simple hiatus but a functional interface between the sphincter and the duodenal wall. Clin. Anat. 26:598–609, 2013.
PB Wiley
SN 0897-3806
SN 1098-2353
YR 2012
FD 2012-06-04
LK https://hdl.handle.net/20.500.14352/110949
UL https://hdl.handle.net/20.500.14352/110949
LA eng
NO Yang, J. D., Hwang, H. P., Kim, J. H., Rodríguez-Vázquez, J. F., Murakami, G., Yu, H. C., & Cho, B. H. (2013). Duodenal window revisited: A histological study using human fetuses. Clinical anatomy (New York, N.Y.), 26(5), 598–609. https://doi.org/10.1002/ca.22108
NO Ministry of Health & Welfare (República de Corea)
DS Docta Complutense
RD 9 abr 2025