Mucinous cystadenoma of the pancreas on CT scan, ERCP, US, and MRI

(A) A CT scan shows a 6 cm cystic mass in the tail of the pancreas (arrowhead) with an enhancing wall (arrow).
(B) An ERCP shows no communication of the pancreatic ductal system with the cyst seen on the CT scan, thus excluding the diagnosis of a pancreatic pseudocyst.
(C) An US shows a 3 cm soft tissue nodule (arrowhead) within a 6cm cyst (+..+).
(D) A T2-weighted MRI shows a low-intensity T2 dark nodule (arrow) within the cystic matrix of the mucinous cystadenoma.