Preoperatively Manifestations as Univesicular Mass-like Lesion and Postoperatively as a Multivesicular Lesion with Multiple Daughter Cysts: A Very Rare Case Report

Pulmonary vesicular hydatid cysts and uncomplicated cysts with echinococcosis granulose and daughter cysts are very rare. A 58-year-old man presented to our center with cough, hemoptysis, and right-side chest wall pain. Chest x-ray and computerized tomography scan revealed a cystic-like appearance mass in the hill of the right lung. FOB and BAL were normal. With right side PL- --thoracotomy, the cystic mass of the lung was removed. Hundreds of 1to3 cm size daughter cysts and laminated membrane was discovered after opened the cystic mass. Pathologic examinations revealed the hydatid cysts with daughter cysts on the lung cystic mass. To the best of our knowledge, this is probably a rare presentation of a lung hydatid cyst as a mass-like and univesicular cyst, which is full of a daughter cyst.