Source:http://linkedlifedata.com/resource/umls/id/C0935182
FMA: Venous tree (organ) connected to the right atrium. Examples: superior vena caval tree, inferior vena caval tree, main cardiac venous tree,UWDA: Venous tree (organ) connected to the right atrium. Examples: superior vena caval tree, inferior vena caval tree, main cardiac venous tree