title: Anomalous first rib as a cause of the thoracic outlet syndrome.
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D012272:Ribs / Q000002:abnormalities*; D013901:Thoracic Outlet Syndrome / Q000209:etiology* / Q000601:surgery