Abstract
One hundred and fifty patients with breast carcinoma were examined to compare axillary node status, estrogen receptor level and cellular DNA content as prognostic indicators. Seventy-four per cent of the patients were postmenopausal and forty per cent had axillary node metastases. Estrogen receptor was measured by isoelectric focusing in polyacrylamide gel. DNA was measured in individual cell nuclei by means of Feulgen-acriflavine-sulphate stained imprints. Fifty-two per cent of the tumors had diploid and/or tetraploid DNA pattern, and the rest aneuploid pattern. Axillary node metastases, aneuploid DNA pattern and low level of estrogen receptor were related to recurrence. When introduced into Cox's proportional hazards procedure, axillary nodes and estrogen receptor level but not DNA pattern remained as significant predictors of recurrence.
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