Ansa pancreatica type of ductal anatomy

Anatomical
pancreatic variants in intraductal papillary mucinous neoplasm patients: a cross-sectional study. Meandering main pancreatic duct (MMPD) at the head of the pancreas. a Reverse-Z subtype C1 where the more upstream turn is tight and < 90° and the second turn is smoother and > 90°. b Reverse-Z subtype C2 where the more upstream turn is > 90° and the second turn is tight and < 90°. c Reverse-Z subtype C3 where there are two tight and < 90° turns in the horizontal direction along the same plane. d C3 subtype with the duct of Santorini which attaches to the right tight turn and drains into the minor papilla. e Loop-up configuration. f Loop-down configuration. g N-shape where the duct forms a deep notch. h N-shape where the ansa pancreatica attaches to the notch and drains into the minor papilla
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The ansa pancreatica is a rare type of anatomical variation of the pancreatic duct. It is a communication between the main pancreatic duct (of Wirsung) and the accessory pancreatic duct (of Santorini). Recently, the ansa pancreatica has been considered as a predisposing factor in patients with idiopathic acute pancreatitis .

The ansa pancreatica arises as a branch duct from the main pancreatic duct. It descends down initially, it then ascends upward forming a loop finally terminating at the minor papilla.

This type of pancreatic ductal variation can be identified on ERCP or MRCP studies.

History and etymology

It is derived from the Latin "ansa", which means "handle" as its configuration resembles a handle.

Siehe auch:
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Assoziationen und Differentialdiagnosen zu Ansa pancreatica type of ductal anatomy:
Pankreas
divisum
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Variationen
Pankreas
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