Large pulmonaly cyst in nonsmoker: Sporadic finding

Cystic lung disease (CLD) is a group of lung disorders characterized by the presence of multiple cysts, defined as air-filled lucencies or low-attenuating areas, bordered by a thin wall (usually < 4 mm). It is very often mixed with giant bullaes which are common in patients with emphysema. Case report: A 76-year-old woman with a medical history of subocclusive disturbance was admitted to surgery department. Accidentally, during preoperative examination, chest X-ray revealed giant bullae in the right lung. CT scan confirmed it, but due to the wall thickness the changes have been classified into pulmonary cyst which have a completely different approach in treatment. Thus, patient underwent without surgery and was treated conservatively. Conclusion: The main difference between a giant bullae and a pulmonary cyst is in wall thickness, if it measures between 1 and 4 mm it is pulmonary cyst, unlike bullae whose wall is thinner than 1mm.