unilateral hilar lymphadenopathymediastinal hilar lymphadenopathysupraclavicular adenopathybilateral hilar lymphadenopathy causesretroperitoneal adenopathysubcarinal adenopathymediastinal adenopathyhypermetabolic adenopathysubmandibular adenopathypreauricular adenopathyperipheral adenopathymetastatic adenopathy