Pulmonary hydatidosis. Contribution of x-ray computed tomography

33 patients with pulmonary hydatidosis were followed by CT scan imaging. 53 hydatid cysts were found in 31 of them. The remaining two were cases of metastatic hydatidosis, the primary affection was cardiac located with multiple small bilateral cysts. The observed cysts were single in 27 cases and multiple in 4, totalizing 26 cysts. Among the 27 single cysts, 15 were found to be complicated while 8 cysts were complicated among the four cases of multiple hydatidosis. This paper gives the most important signs observed by CT scan imaging in 33 cases examined during 6 months in the Central Service of Radiology Avicenne CHU, Rabat.