Earliest feature of pulmonary venous hypeension is -
Upper lobe venous diversion is the 1st radiological sign of pulmonary venous hypeension.Kerley B Lines , perihilar haze ,peribronchial cuffing,pumonary ossicles ,fine punctuate calcification and perihilar batwing pattern are the other features seen in PVH.
Upper lobar vessel dilatation
Kerley B Lines
Left atrial enlargement
Pleural effusion
Cardiovascular system