A rare presentation of hydatid cyst in a child.

Cyst hydatid is the most widespread, serious cestode infection in the world. The most common organ affected by hydatid disease is the liver followed by the lungs and the two organs are affected simultaneously in about 5-13% of cases. The involvement of kidneys are rarely reported. Here we reported a patient with hydatid cysts in lung and kidney which the surgery was effective for both organs. The rarity of this case is the unusual combination of the cyst development in these organs without the involvement of liver.