A pericardial cyst is a congenital mediastinal cyst occurring in the pericardium, also known as a mesothelial cyst, parietal pericardial cyst, pleural pericardial cyst, mediastinal hydatid cyst, or mediastinal simple cyst. The cyst is isolated from the pericardial cavity, and if it communicates with the pericardial cavity via the tip, it is called a pericardial diverticulum. Recognition of pericardial cysts Pericardial cysts are relatively rare, accounting for about 8. 9% of mediastinal tumors and cysts and 17% of mediastinal cysts. The reason for its low incidence is that, in addition to the rarity of the disease, most of them are asymptomatic, some of them are small and overlap with mediastinal shadows, so they are not easily detected, and the age of onset is mostly young adults. Treatment of pericardial cyst Surgery is a more effective measure for this disease with more satisfactory results, but there are also some complications occurring mainly some postoperative complications, such as incisional infection postoperative intestinal adhesions and pneumonia, etc. It should be especially noted that postoperative intestinal adhesions are a common complication after laparotomy, but when some cysts of pericardial cysts are located low, the surgery will involve the abdominal cavity, so intestinal adhesions will also occur, and the clinical symptoms are The main symptom is abdominal pain and distension, with a high incidence, and in severe cases, adhesive intestinal obstruction can occur. Pericardial cysts are benign lesions that grow slowly and are mostly found in adults, and pericardial cysts have not been seen to disappear spontaneously, and some people advocate pericardial aspiration. However, with the increase of cysts can appear compression symptoms, affect heart function, secondary infection, and accurate histological diagnosis cannot be established, which may delay the treatment of potentially curable tumors. Therefore, once diagnosed, surgery should be performed as early as possible. Currently, surgery is mostly advocated for the treatment of pericardial cysts, which are more fixed and limited in location, with lighter adhesions, easy to separate, and relatively simple to operate, generally using small anterolateral incisions, and some scholars advocate thoracoscopic surgery to remove cysts, which has the advantages of small trauma and fast recovery with high quality, and is a minimally invasive surgical method.