The patient is a 22-year-old female. Since the age of 13, she has noticed an abnormality developing in the shape of the costal margin on both sides of her lower chest wall. As no discomfort was felt, she did not pay much attention to the deformity. However, as she grew older (especially after puberty), the deformity became more pronounced, with the costal margin becoming severely asymmetrical and aesthetically unpleasing. This caused the patient significant psychological stress, and she is eager to undergo surgery as soon as possible.

Prominent protrusions are present on the left and right costal archs, exhibiting severe asymmetry. The lower halves of the chest wall are depressed on both sides, distorting the entire lower part of the chest and causing it to lose its normal morphology.

Two bars were used in the surgery. One for the Wung procedure to correct the bilateral chest wall depressions, and the other for the Wenlin procedure to treat the protrusions of the costal archs. The operation lasted for 2 hours and proceeded smoothly, achieving satisfactory results.