A brief introduction to radiographs and chest CT scans for the diagnosis of cystic lung diseases.  Lymphangioleiomyomatosis (LAM) is the focus – including diagnosis of the disease and its complications.  Other cystic lung diseases such as Langerhans Histiocytosis, Birt-Hogg-Dube and Lymphocytic Interstitial Pneumonia (LIP) will also be mentioned.