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What does it mean if my report on ductal carcinoma in-situ (DCIS) mentions “estrogen receptor (ER)” or “progesterone receptor (PR)”?

April 26, 2017carcinoma DCIS ductal er in-situ mean mentions receptor report

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What does it mean if my report on ductal carcinoma in-situ (DCIS) mentions “estrogen receptor (ER)” or “progesterone receptor (PR)”?

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ER and PR are special tests that the pathologist does that are important in predicting response of the DCIS to certain types of therapy. Results for ER and PR are reported separately and can be reported in different ways: 1) negative, weakly positive, positive; 2) percent positive; 3) percent positive and whether the staining is weak, moderate, or strong. How the results of your tests will affect your therapy is best discussed with your treating physician.