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Abdominal US and CT at admission. A: Abdominal US revealed an irregularly contoured, hypoechoic, cystic lesion in the head of the pancreas, with calcification at the center of the mass (arrow); B: abdominal CT demonstrated an inhomogeneous lobulated multicystic mass of 4.5 cm × 2.0 cm in the head and uncinate process of the pancreas, with central calcification (arrow).
