Hydatidosis, caused by Echinococcus granulosus, is still an endemic parasitic disease in the Mediterranean area, South America, North Africa, and Australia. The most common anatomic location of hydatid disease is the liver, followed by the lung. Hydatidosis is located in the bones in 0.5% to 2% of all cases. A hydatid cyst can be seen in any part of the body. However, primary hydatid cyst of the rib in childhood is exceedingly rare. We report the first case of a pediatric hydatid cyst of the rib mimicking chest wall tumor.
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