Hydatid cyst disease is a parasitic parasitic disease caused by the metacestode stage larva of Echinococcus granulosus, a flatworm. It is common in developing countries and is most commonly found in the liver and lungs. Symptoms include cyst growth and rupture, which can occur spontaneously due to trauma or treatment. Diagnosis is based on radiological imaging, which shows cysts as homogeneous lesions surrounded by normal lung tissue. Treatment involves surgery, with benzimidazole compounds acting directly on the cyst wall. Pediatric lung hydatid cysts have different patterns than adults, and posterior chest radiography is an inexpensive initial examination tool.