A case of multiple pericardial diverticula diagnosed by thoracoscopy

Abstract

A 24-year-old female consulted our hospital because of an abnormal shadow pointed out on a chest radiograph film during a medical check-up. CT showed two nodules located in the mediastinum in contact with the pericardium. MRI showed nodules consisting of cystic components exhibiting a low signal intensity on T1-weighted imaging and high signal intensity on T2- weighted imaging. Under the diagnosis of a benign mediastinal cyst, video-assisted thoracic surgery was performed. A fistula to the pericardium was observed inside a cyst, and another cyst was easily deflated on applying manual pressure. We diagnosed multiple pericardial diverticula using the two methods.
Thoracoscopic surgery was useful for the diagnosis of pericardial diverticulum.