Pancreatic pseudocysts most commonly develop in the lesser sac, which lies between the posterior wall of the stomach and the anterior surface of the pancreas. This space allows for the accumulation of pancreatic fluid collections following pancreatitis or pancreatic ductal disruption.
The left anterior pararenal space (B) is a secondary location.
The right subdiaphragmatic space (C) and left pericolic gutter (D) are less common sites.
Reference Extracts:
Mortele KJ, Wiesner W, et al."Pancreatic pseudocysts: imaging features and diagnostic difficulties." Radiographics. 2004;24(4):1005-1020.
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th ed. Elsevier, 2017.
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