hilar lymphadenopathy causesunilateral hilar lymphadenopathymediastinal hilar lymphadenopathybilateral hilar lymphadenopathy causesleft hilar adenopathyhilar lymphadenitishilar lymphnodesunilateral hilar adenopathyipsilateral hilar adenopathymediastinal and hilar adenopathybilateral hilar adenopathybilateral hilar