Earliest radiological sign of pulmonary venous hypeension in chest X-ray is -: (A) Cephalization of pulmonary vascularity, (B) Pleural effusion, (C) Kerley B lines, (D) Alveolar pulmonary edema
Answer is A. Upper lobe venous diversion is the 1st radiological sign of PVH. Kerley B lines , perihilar haze ,peribronchial cuffing,pulmonary ossicles,fine punctate calcification and perihilar wing pattern.