A man having 'cyst' in the 'cyst'!

Hydatid disease is a zoonotic parasitic infestation caused by tapeworms, particularly Echinococcus granulosus. The lung is the second most site followed by liver accounting for 10%-30% of the cases. Rupture of hydatid cyst can occur into pleura or bronchus. Surgery remains the mainstay of treatment for pulmonary hydatid. Hydatid disease is a zoonotic parasitic infestation caused by tapeworms, particularly Echinococcus granulosus. We present a case of pulmonary hydatid cyst. Several linear areas of increased attenuation noted within the cyst in its dependent portion, which could represent ruptured cysts. image