Escalante JM, Molina G, Rincón FM, Acosta Buitrago LM, Perez Rivera CJ. 19/3/2021

Background
A bronchogenic cyst is a remnant of the primitive gut tube occurring as a consequence of abnormal embryonic development in the tracheobronchial tree between the 5th and 16th gestational week [1,2,3]. It is a rare congenital defect, with an incidence of 1/50000 people [4], representing 14–22% of all congenital pulmonary defects [2] and 10–15% of all primary mediastinal masses [1]. The average diameter ranges from 2 to 4 cm2 and is classified based on location as parenchymal or mediastinal, the latter being 86% of the cases. Intrapericardial and intracardiac locations are not common in the literature [5]. We present a case of a patient who underwent successful resection of a giant intrapericardial bronchogenic cyst of 8x6cm, described in accordance to surgical case report (SCARE) criteria.

Conclusions
Large bronchogenic cysts located intrapericardially are very rare. However, they should be included in the differential diagnosis of patients presenting with atrial fibrillation and heart failure with abnormal radiologic studies.

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