title: Renal cell carcinoma--invasion of veins.
abstract: Out of 188 operatively removed renal cell carcinomas 49% showed macroscopic evidence of vein invasion and in 28% of the cases only histologically provable vein invasion. The uncorrected 5-year survival rates amounted to 40.8% in macroscopic vein invasion, 60.6% in histologically provable vein invasion and 75.6% in the absence of vein invasion. The term 'vein invasion' should therefore always be defined more precisely. Hence suggest to modify the V classification of 1974 of the UICC.
mesh_terms: D000230:Adenocarcinoma / Q000145:classification / Q000401:mortality / Q000473:pathology*; D005260:Female; D005860:Germany, West; D006801:Humans; D007680:Kidney Neoplasms / Q000145:classification / Q000401:mortality / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011379:Prognosis; D014680:Veins / Q000473:pathology*