Transthoracic needle aspiration is not a recommended diagnostic modality in hydatid disease. Percutaneous aspiration of a suspected hydatid cyst is believed to be associated with the risk of allergic reactions which can result in systemic anaphylaxis and possible spreading of the cyst contents. We present herein a illustrative case of pulmonary hydatid cyst and multiple mediastinal lymphadenopathies which was diagnosed after repeated transthoracic fine needle aspirations.