The incidence of positive oestrogen and progesterone receptors in breast cancer of Greek women.

Oestrogen and progesterone receptors were determined in breast tumours of 80 Greek women. Oestrogen-positive receptors were found in 84.6% of the pre (n = 39) and 85.4% of the postmenopausal (n = 41) patients while progesterone-positive receptors were found in 71.8% of these women respectively. In combination, 69.2% of the pre-menopausal had both receptors detectable, 15.4% had oestrogen-positive and progesterone-negative and 2.6% had oestrogen negative and progesterone-positive while 12.8 had no detectable receptors. This incidence in postmenopausal women was 51.2, 34.2, 0.0, 14.6% respectively. The ratio of progesterone to oestradiol receptor concentration was 7.6 in the pre- and 1.7 in the postmenopausal group (p less than 0.05). In conclusion, the incidence of positive receptors in Greek women with breast cancer is similar to that of other Western populations.