The aim of this study was to evaluate our results during and after the Nuss operation in children with pectus excavatum. We have performed the Nuss procedure in 128 patients with pectus excavatum since 2001, and 74 patients underwent bar removal. Of the 128 patients 96 were male and 32 were female; age ranged from eight to 21 years with an average of 13.8 years. In 46% of patients psychological reasons for operative treatment were dominant while in the other 54% of patients clinical signs were the indications. Complications in 128 patients included 36 pneumothorax, 28 of which resolved spontaneously. Postoperative pneumonia developed in six patients. In two patients we had infection of the implanted bar, and there were two patients with cellulitis. We had six patients with bar displacement and reoperation was needed. During the Nuss procedure we had one injury of the intercostal artery. We had pericardial tears in two patients without clinical significance. In two patients we had pericardial effusion six months after the Nuss procedure, requiring pericardiocentesis. In one patient we had fracture of the sternum. There were no complications following bar removal. After bar removal in 74 patients, 54 patients (72.9%) maintained excellent results with normal chest anatomy, good results were found in 16 patients (21.6%) with mild residual pectus and poor results in four patients (5.5%) with severe recurrence. Our experience with the Nuss procedure demonstrated excellent results with few minor complications.