Chicken chest is divided into symmetrical chicken chest, asymmetrical chicken chest and mixed chicken chest (protruding on one side and depressed on the other). The etiology of pectus excavatum is not clear, but it is thought to be related to heredity, and there are reports that about 1/4 of the pectus excavatum families are involved in chest wall deformity. other scholars believe that it is due to abnormal fixation of sternal components; lack of sternal ossification center; abnormal attachment and development of diaphragm; excessive forward growth of rib cartilage, resulting in forward growth of sternal stalk, sternal body and saber process, etc. Pectus excavatum is often an independent deformity, and some of them are accompanied by heart deformity, but The diagnosis of pectus excavatum is also straightforward and often presents with anterior sternal protrusion, rib cartilage and rib depression. A few are accompanied by cardiopulmonary compression symptoms, and the severe cases are prone to fatigue, recurrent respiratory infections and bronchial asthma. The incidence of chicken chest and funnel chest is about 1:10. There are two types of chicken chest: 1. Sternal body cartilage type chicken chest: the lower part of the sternum protrudes most prominently as well as the saber protrusion. Both sides of the chest sunken, this type is more common. 2, sternal stalk cartilaginous type chicken chest: manifested as the sternum and its adjacent 1st and 2nd rib cartilage protrusion. Of course, your main concern is the treatment method of chest wall deformity, which is usually treated by minimally invasive method with good effect. You can also use the sternal sink method, which is the same as a sternal lift and involves cutting down and shortening the 3-7 ribs of cartilage where the deformity has grown. The sternal deformity is corrected and sunken. In the case of a one-sided corpus cavernosum, a one-sided rib sternal correction is performed, etc. Of course, the surgery is performed in hospital, under general anesthesia. If it is not too obvious, if you can make the deltoid and pectoralis major muscles especially developed through exercise, it will also make the upper body shape improve and make the corpus cavernosum deformity hidden.