PC is a chest wall deformity characterized by protrusion of the bony structures of the anterior chest wall. Generally speaking, the heart and lungs of patients with PC are not compressed by the chest wall, so most patients do not experience symptoms of chest dyspnea. However, in clinical practice, many patients with PC have symptoms such as chest tightness and palpitations, and heart and lung compression can also be found during X-ray examination. What exactly causes this?

In fact, since the circumference of the chest is fixed, if one part of the chest wall is lordotic, it will often cause local depression in other parts. And the depression is similar to Pectus Excavatum and may cause compression of the heart and lungs.

Additionally, psychological factors may also be one of the reasons. Many patients only have protrusion deformity of the chest wall, but they still feel discomfort, which is caused by the patient's tension and anxiety.