Crazy Paving on Chest CT • Thickened interlobular septa in a background of diffuse GGO's. • DDx: PAP, pulm edema, lymphangitic spread of malignancy, pulm mucinous adeno Ca, sarcoidosis, lipoid pna, pulm hge, ARDS, PJP https://doi.org/10.1016/j.chest.201 #Crazy #Paving #Sign #CT #Lung #Pulmonary #diagnosis #radiology #clinical