Hydatid cyst of the lung caused by echinococcus granulosus is an endemic disease in the Mediterranean and South American Countries Symptoms due to compression of an airway or a mediastinal structure are seen early in the childhood hydatid cysts. Parenchyma saving operations such as cytostomy plus capitonnage or enucleation plus capitonnage are advocated whenever possible. Between january 1974 and september 1995, 99 patients with pulmonary hydatid cyst underwent surgical operations. There were 51 boys and 48 girls with an age range of 3 to 16. In all patients, except for 8, conservative procedures were performed. Surgical resection such as lobectomy and pneumonectomy were done in 8 patients because of parenchymal destruction. There were no mortality and minimal mortality. In the follow-up, we observed only one recurrence in mediastinum. Surgical therapy in the pediatric hydatid disease of the lung are performed with no mortality and minimal complications