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