My Father Aged 72 Has Been Affected By Sever Cough.

my father aged 72 has been affected by sever cough. His x- ray chest P A VIEW reports that --- Cardiothoracic ratio and pulmonary vascularity increased with congested lung fields in both mid and lower zones. left base is more affected with obliteration of left CP angle suggestive of small effusion.

what does it mean