Yeu-Sheng Tyan2026-10-162026-10-162009-06-01Pure ID: 15239982Pure UUID: 4a4f85e3-e64d-4320-b896-e211b314ff23https://www.scopus.com/pages/publications/70349301528https://scholars.csmu.edu.tw/handle/123456789/34251Mediastinal pancreatic pseudocyst is rarely a complication of pancreatitis. Both the syndrome itself and diagnostic chest radiograph can easily be confused with hiatus hernia. It is a challenge for radiologists to distinguish a mediastinal pancreatic pseudocyst from a mediastinal cystic lesion on CT (computed tomography) axial imaging. Here, we present the case of a 51-year old man with severe epigastralgia, vomiting and nausea. Chest radiograph and axial CT imaging revealed a posterior mediastinal cystic mass which could be mistaken as hiatus hernia. Using MDCT (multidetector computed tomography) coronal and sagittal images, it is easy to distinguish between a mediastinal lesion (e.g., hiatus hernia) and the pancreas, and thus it is possible to distinguish a mediastinal pancreatic pseudocyst.4enjournal article