<unk> s that are small and cause no symptoms can be followed with repeat imaging through echocardiogram, CT, or MRI to assess for changes.<unk> s that are large or cause symptoms may be candidates for percutaneous aspiration, ethanol sclerosis, or surgery. Percutaneous aspiration removes the fluid from inside the<unk> , and ethanol sclerosis uses the injection of ethanol into the<unk>  after aspiration to decrease the likelihood of<unk>  recurrence. Percutaneous aspiration with ethanol sclerosis is typically the first treatment for<unk>  that requires management. Surgery can remove a<unk>  through a thoracotomy, sternotomy, mediastinoscopy, or video-assisted thoracic surgery. The type of surgery is chosen based on the size and location of the<unk> .
Pericardial cyst
Cardiac myxoma
Annuloaortic ectasia
Crisscross heart
Overriding aorta
Cardiac fibroma
Pulmonary artery sling
Aortoesophageal fistula