Radiology, Vol 122, 637-642, Copyright © 1977 by Radiological Society of North America
Fusion anomalies of the pancreatic ductal system differentiation from pathologic states
JP Belber and K Bill
If fusion of the ventral and dorsal pancreatic ducts does not occur during
fetal life, endoscopic retrograde cannulation of the papilla of Vater will
visualize a small complete ductal system which is confined to the head of
the pancreas. This system is characterized by normal arborizations
throughout, relatively small duct diameters and the absence of a
communication with the minor papilla. In contrast, if fusion has taken
place and the ductal system is shortened by disease, pancreatography will
demonstrate abrupt proximal termination or proximal tapering without side
branches, and may show a significant duct of Santorini. If the ducts have
fused, an area of narrowing approximately 3-20 mm in length commonly occurs
at the level of fusion. This should not be confused with pathologic ductal
stenosis.
