Abstract:followed from the date of breast cancer diagnosis through death or December 31, 2009. Patients were identified as having positive (negative) ER or PR status if the corresponding assay was reported to SEER as positive/elevated (negative/normal). Demographics, initial treatment (surgery or radiation within 4 months of diagnosis), and survival (Kaplan-Meier [KM] survival curves) were evaluated, by ER and PR status. RESULTS: A total of 3210 female Stage IV BC patients (2,417 [75.3%] ERϩ, and 793 [24.7%] ER-) were … Show more
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