A 13-year-old girl was admitted to our clinic with the complaints of dyspnea, abdominal distention, cough, and right-sided chest pain. The diagnosis of disease was made with physical examination andradiologic evaluation. She underwent right thoracotomy and phrenotomy for the management of the hydatid cysts of the lung and the liver. Thepostoperative course was uneventful and she was discharged on the 10thpostoperative day. We believe that the simultaneous management ofconcomitant pulmonary and hepatic hydatid cysts through a thoracicroute is a convenient option. (C) 2003 by The Society of Thoracic Surgeons.