Malignant primary vein tumors.
D000328:Adult; D005260:Female; D005354:Fibrosarcoma / Q000473:pathology; D006390:Hemangioendothelioma / Q000473:pathology; D006801:Humans; D007223:Infant; D007890:Leiomyosarcoma / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D012516:Osteosarcoma / Q000473:pathology; D012501:Saphenous Vein; D012509:Sarcoma / Q000473:pathology*; D014682:Vena Cava, Inferior