Validation of the modified TNM-Izumi classification for hepatocellular carcinoma

Aims and background: The clinical value of the UICC TNM classification and theIzumi TNM modification regarding prognosis after hepatic resection was e valuated. Methods: Between January 1993 and December 1998, survival and disease-free survival were analyzed in 53 cirrhotic patients (40 males, 13 females; mean age, 65 years; range, 43-81) who underwent hepatic resection for HCC. Results: The 1-, 3-, and 5-year overall survivals were: 89%, 54%, and 50%, with disease-free survivals of 70%, 38%, and 28%, respectively. The differe nce between stages 1 and 2 or stages 3 and 4A using the UICC TNM classifica tion was not significant with respect to survival or disease-free survival. Conversely, the Izumi TNM modification showed a significant difference bet ween each stage with respect to survival and disease-free survival. In a mu ltivariate analysis the lack of micro/macro vascular invasion was predictiv e of long-term outcome. Conclusions: Our results show that the UICC TNM classification for hepatoce llular carcinoma Is inadequate. The Izumi modified TNM staging system Is su perior in assessing prognosis for surgical HCC patients.