We decided to treat only symptomatic patients with the Nuss procedure. Because it is a very invasive surgery with a considerable risk of death and a long hospitalization, from 5 to 7 days. Patients without cardio-thoracic symptoms are candidates to the 3D prosthesis surgery, as it is a surface surgery, without intra-operative complications, and a shorter hospitalization, 1 to 3 days. Even the post-operative management of pain is totally different, the Nuss procedure requires the administration of opioid analgesics, the 3D prosthesis only paracetamol.