Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2. Cardiogenic pulmonary edema: incidental finding in HRCT, smooth septal thickening with basal predominance (Kerley B lines), ground-glass opacity with a gravitational and perihilar distribution, thickening of the peribronchovascular interstitium (peribronchial cuffing)
3. Lymphangitic carcinomatosis.
4. Lymphangitic carcinomatosis with hilar adenopathy.
5. Alveolar proteinosis: ground glass attenuation with septal thickening (crazy paving).
6. Cardiogenic pulmonary edema. #Clinical #Radiology #HRCT #CTChest #Reticular #Pattern #Comparison #Table #RadiologyAssistant