<prompt> Earliest radiological sign of pulmonary venous hypeension in chest X-ray is -Cephalization of pulmonary vascularityPleural effusionKerley B linesAlveolar pulmonary edema  <response>: 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. 