Chest computerized tomography of the patient at age 11 years, 7 years after hematopoietic stem cell transplantation and 17 months prior to lung transplantation. At the time of this evaluation, he had dyspnea on exertion, a chronic, non-productive cough, and a restrictive pattern on pulmonary function tests. Bilateral, diffuse areas of ground glass opacities and fibrosis of the lung parenchyma are shown.