We report metachronous single-lung transplantation for cystic fibrosis after contralateral pneumonectomy. Kyphoscoliosis and mediastinal shift required careful donor-lung sizing with computed tomography and was not dependent on typical parameters. Severe reperfusion injury was treated with nitric oxide, C1-esterase inhibitor, and continuous venovenous hemodialysis. The patient was extubated on the fifth postoperative day and is alive and well. We conclude that single-lung transplantation after contralateral pneumonectomy for patients with cystic fibrosis and an asymmetric chest and evident lung volume mismatch may be an acceptable functional therapeutic option. (C) 1997 by The Society of Thoracic Surgeons.