Complete agenesis: Complete absence of pancreatic neck, body, and tail, Santorini duct, and minor papilla
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Ventral pancreas (head and uncinate) appears normal
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MRCP: Visualization only of short ventral duct, with absence of accessory and dorsal duct system
Partial agenesis: Variable appearance of pancreatic body (depending on degree of agenesis), with small remnant Santorini duct and minor papilla
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Pancreas may appear short or truncated with normal pancreatic head and rounded upstream margin
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ERCP
Complete agenesis: Filling of short ventral duct without identifiable dorsal ducts or minor papilla
Partial agenesis: Main pancreatic duct is shortened, some dorsal ducts remain with filling of atretic Santorini duct
TOP DIFFERENTIAL DIAGNOSES
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Pancreatic ductal carcinoma
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Chronic pancreatitis (pseudoagenesis)
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Post-traumatic pancreatic atrophy
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Diagnostic Imaging_ Gastrointes - Michael P Federle
