also called accessory pancreatic duct (APD) may be present as an anatomical variation due to the embryological origin of the pancreas from two pancreatic buds (dorsal and ventral). Named after Giovanni Domenico Santorini (1681 - 1737) an Italian anatomist who dissecting and delineating many anatomical features.Note the main pancreatic duct (MPD) from the dorsal bud, present in the body and tail of the pancreas (also called Wirsung’s duct).