2017 Volume 31 Issue 5 Pages 643-647
Exostosis is a benign bony tumor that occurs in the bones either sporadically or as a hereditary condition at multiple sites in infants and children. These are usually observed in the tubular bones of the extremities such as the femur, tibia, and humerus. Costal exostosis is rare, but pneumothorax, hemothorax, pericardial effusions, and diaphragm injury as intrathoracic complications can occur. To the best of our knowledge, this is the ninth report of pneumothorax caused by costal exostosis. We report a case of pneumothorax in a 13-year-old girl with exostosis of the left fifth rib. We performed resection of the injured lung and exostosis by video-assisted thoracoscopic surgery.