The patient, only 5 years old, was diagnosed with severe pectus excavatum at an early age. Due to the severity of the deformity, he often experiences breathing difficulties, frequent colds, and is prone to pneumonia.

The patient's anterior chest wall exhibits a severe depression, with the deepest part of the depression extending beyond the anterior edge of the spine and sinking into one side of the chest cavity. The heart is severely compressed and completely displaced to the left chest cavity. The Haller index is negative, indicating the most severe type of pectus excavatum.

During the surgery, both the Wang procedure and the Wung procedure were performed to correct the deformity with a satisfactory outcome, and the patient's chest wall returned to normal after the surgery.