title: [Congenital absence of the valve apparatus of the deep veins in the leg].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D006801:Humans; D007866:Leg / Q000098:blood supply* / Q000000981:diagnostic imaging; D007871:Leg Ulcer / Q000209:etiology; D008209:Lymphedema / Q000209:etiology; D008365:Manometry; D008722:Methods; D008875:Middle Aged; D010690:Phlebography; D014648:Varicose Veins / Q000209:etiology; D014652:Vascular Diseases / Q000000981:diagnostic imaging; D014680:Veins / Q000002:abnormalities*
vernacular_title: Vrozhdennoe otsuststvie klapannogo apparata glubokikh ven nizhnikh konechnosteĭ.