Minimally invasive treatment of pectus excavatum.

Pectus excavatum (PE) is the most common congenital chest wall deformity. It consists of a concavity of the sternum, and the costal cartilages derived from an unbalanced growth of the costochondral regions of the anterior chest wall. The standard operative treatment for PE has been the Ravitch procedure. This technique requires a long incision in the anterior chest wall and bilateral resection of the affected costal cartilages, needing in most cases a posterior metal bar support. The belief that the treatment of PE is basically esthetic led Donald Nuss to develop in 1998 a minimally invasive surgical treatment based on the skeletal frame plasticity and reshape capacity applied to the thorax. Thereby he deviced a technique involving a retrosternal steel bar modifying the sternum´s concavity and supporting the shape of the amended thorax, all performed through two small incisions at each side of the thorax with the help of a thoracoscope. The bar is maintained from 2 to 3 years, and removed after this period. This procedure obtains >90% of positive results with significant esthetic improvement and patient satisfaction. This minimally surgical approach for PE is to be discussed in this review.