Results: From 10/2011 to 03/2013, 40 patients (27 males and 13 females) were evaluated for pectus excavatum deformity at the Children's Hospital 2, composed of 33 cases of type 1a, 6 cases of type 1b, 1 cases of type 2a1of Park's classification with mean age 9.5 years (min: 3 years, max: 15 years).