Fig. 2

Intraoperative and postoperative general clinical data of patients. A During the second-stage operation, the sinus wound was debridement again. B A pedicled latissimus dorsi myocutaneous flap with a size of about 15 × 8 cm was harvested during the operation, and the blood supply was good. C The latissimus dorsi myocutaneous flap was transferred to the chest wall defect by opening the subcutaneous tunnel. D On the 4th day after operation, the chest wall defect was repaired, the drainage tubes were pulled out, and the myocutaneous flap survived