RT Journal Article SR Electronic T1 A hiding in the lining: painful pericardial cyst JF BMJ Case Reports FD BMJ Publishing Group Ltd SP bcr2013008618 DO 10.1136/bcr-2013-008618 VO 2013 A1 Masood, Abdul-Mannan A1 Ali, Omair M A1 Sequeira, Reginald YR 2013 UL http://casereports.bmj.com/content/2013/bcr-2013-008618.abstract AB A pericardial cyst is a rare and benign congenital malformation, usually discovered in the third or fourth decade of life. Its clinical presentation is variable, as it may be asymptomatic or present with chest pain, shortness of breath, or rarely with cardiac tamponade and arrhythmias. We present an interesting case of a woman presenting with chest pain who was found to have a pericardial cyst.