[The 1978 TNM system for cancer of the breast: proposal for a modification]

The authors study the 5 and 10 years survival of 1.058 cases of breast carcinoma treated between 1963 and 1981, classified according to the pTNM system. They suggest the convenience of eliminating some of the combinations in order to obtain a good correlation with prognostic criteria. The authors propose a modification of the TNM system with closer clinical significance.