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CT will also demonstrate signs of congestive heart failure. On the image on the left notice the following: Thickened septal lines due to interstitial edema Subtle ground glass opacity in the dependent part of the lungs (HU difference of 100-150 between the dependent and non-dependent part of the lung). Bilateral pleural fluid. In a patient with a known malignancy lymphangitic carcinomatosis would be high in the differential diagnostic list. Ground glass opacity is the first presentation of alveolar edema and a precursor of consolidation. #Clinical #Radiology #CTChest #CHF #KerleyB #Kerley #Intersitial #Edema #IntersitialEdema #Septal #RadiologyAssistant