PT  - JOURNAL ARTICLE
AU  - Abdus Salam
AU  - Mujtaba Mubashir
AU  - Hadika Mubashir
AU  - Saulat Hasnain Fatimi
TI  - Giant retrocardiac foregut duplication cyst presenting with left atrial compression and palpitations
AID  - 10.1136/bcr-2017-222427
DP  - 2017 Dec 12
TA  - BMJ Case Reports
PG  - bcr-2017-222427
VI  - 2017
4099  - http://casereports.bmj.com/content/2017/bcr-2017-222427.short
4100  - http://casereports.bmj.com/content/2017/bcr-2017-222427.full
AB  - A 35-year-old man presented with a 3-month history of palpitations and shortness of breath. An ECG showed premature atrial contractions and episodes of supraventricular tachycardia. A subsequent echocardiogram showed a retrocardiac cystic mass that was compressing the left atrium. A CT scan confirmed these findings by showing a large left-sided posterior mediastinal cyst compressing the left atrium and pulmonary veins. The cyst was successfully excised from the retrocardiac position via left thoracotomy after which there was complete resolution of the palpitations. Histopathology showed it to be a mediastinal cyst, most likely a foregut duplication of the enterogenic variant. This is an extremely unusual case of foregut duplication cyst presenting with compression of the left atrium and pulmonary veins leading to atrial arrhythmias.