Pericardial cysts occur rarely, with an incidence rate of 1 per 100,000. They are usually detected by chance and clinically silent in most cases. Pericardial cysts are the most common benign tumours of the pericardium and presents by the third or fourth decade of life, and equally common in males and females. In principle, they only require follow-up, however, an enlarging or symptomatic cyst requires surgical removal. We report a case of a 32 year-old Malay lady, who presented with history of recurrent pericardial effusion followed by right pleural effusion. Computed tomography (CT) thorax identified a large mediastinal cyst as the cause of her problem, requiring exploratory thoracotomy.
Intrapulmonary bronchogenic cyst is a rare congenital lesion originating from abnormal budding of the embryonic foregut. It is less common than mediastinal bronchogenic cyst. We describe a case of intrapulmonary bronchogenic cyst and discuss the treatment of this condition.
Enteric cysts are uncommon posterior mediastinal cysts, usually presenting with respiratory symptoms in infancy. We present a rare case of posterior mediastinal enteric cyst extending from below the diaphragm and perforating into the left atrium, causing a thromboembolic cerebral infarct in a 5-year-old boy.
Pericardial cysts are uncommon mediastinal lesions that are usually congenital in origin. Patients are usually asymptomatic and the cysts are generally discovered on routine radiography for unrelated purposes. This case illustrates a symptomatic presentation of a haemorrhagic pericardial cyst in which radiographic, echocardiographic and multislice (MRI and CT) imaging were performed. The imaging findings were not typical of pericardial cysts leading to a diagnostic quandary despite the varied imaging techniques. In conclusion, it is important to appreciate that the imaging findings of pericardial cysts can be varied. Radiologists and clinicians alike should be aware of this variability.