An Isolated Hydatid Cyst Of the Lung Spontaneously Evacuated into the Bronchus

Pulmonary hydatid cysts are common in endemic regions but isolated active pulmonary hydatid cyst, which is communicated with bronchus, is not a common finding in adult population. Here we present a case of 35-year-old male who presented with breathlessness, cough with expectoration, chest pain and a homogenous rounded opacity of right lower zone on chest X ray. Ultrasound, contrast enhanced computed tomography revealing mass like lesion with multiple internal air pockets with ring enhancement and expectoration of salty material with complete clearing of the lesion following a cough bout confirmed the diagnosis of complicated hydatid cyst communicating with bronchus.