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Case Reports

A Large Pericardial Cyst Complicated by a Pericarditis in a Young Man With a Mediastinal Mass

^a Department of Medicine, The Ottawa Health Research Institute, University of Ottawa at The Ottawa Hospital, Ottawa, Ontario, Canada
^b Department of Radiology, The Ottawa Health Research Institute, University of Ottawa at The Ottawa Hospital, Ottawa, Ontario, Canada
^c Department of Clinical Pathology, The Ottawa Health Research Institute, University of Ottawa at The Ottawa Hospital, Ottawa, Ontario, Canada
^d Department of Cardiac Surgery, The Ottawa Health Research Institute, University of Ottawa at The Ottawa Hospital, Ottawa, Ontario, Canada

Accepted for publication May 4, 2009.

^_* Address correspondence to Dr Alvarez, 501 Smyth Rd, Ottawa, Ontario, K1H 8L6, Canada (Email: galvarez{at}ohri.ca).

This is a case report of a 30-year-old man who presented with acute right-sided pleuritic chest pain. A chest roentgenogram performed in the emergency room shows a large, well-circumscribed transparent lesion obscuring the right heart border. Further imaging revealed a large pericardial cyst. The patient was taken to surgery as a result of clinical deterioration, and the knowledge that large pericardial cysts, although usually benign, can cause serious complications, including death. Pathology revealed an inflamed pericardial cyst with fibrinous pericarditis.