Answer: 3. Diffuse bilateral thin walled cysts with normal intervening lung.
(The remainder of the choices represent the HRCT findings for the following entities: 1. Langerhans cell histiocytosis 2. Trachiobronchial papillomatosis 4. Lymphocytic interstitial pneumonia)
Question: Differential diagnosis for multiple bilateral pulmonary cysts includes?
Langerhans cell histiocytosis
Lymphocytic interstitial pneumonia