Paraduodenal Pancreatitis: A Deceptive Abdominal Mass with Unique Histologic Findings

Figure 1

Preoperative endoscopy and imaging. (a) T1 VIBE postcontrast sequence axial MRI acquisition showing a delayed enhancement of the 4.4-centimeter mass along the medial duodenal wall with few internal cystic areas (dashed arrow) and accumulation of fluid in the right anterior paraduodenal space (arrow). (b) T2 HASTE sequence coronal MRI acquisition showing the mass along the duodenum (star) and the distal part of the common bile duct winding around the mass with narrowing at the tip (arrow). (c) Endoscopic appearance of the duodenum showing a polypoid and eroded mucosa. (d) EUS showing an ill-defined heterogeneous paraduodenal lesion causing distortion of the duodenal wall layers.

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