Spanish Breast Cancer Research Group (GEICAM) population-based study on breast cancer outcomes: El Alamo project (1990-1997)

585 Background: El Alamo project is a retrospective analysis of 15381 patients (pts) diagnosed of breast cancer (BC) between 1990 and 1997 across 43 of the main Spanish hospitals. Patterns of BC presentation, treatment and survival were analysed. Methods: Two cohorts were analysed: Alamo I (AI) consisted of 4532 pts diagnosed with BC between 1990 and 1993; data were collected by end of year (yr) 2000. Alamo II (AII) consisted of 10849 pts diagnosed between 1994 and 1997; data were collected by end of yr. 2003. 158 items per pt were recorded, including demographic, therapeutic and outcome data. Results: In AI project, 17.6% of pts presented with stage I disease, vs. 24.3% in AII. 55.5% of pts in AI had stage II disease vs. 53.1% in AII. 18.7% of pts in AI had stage III disease vs. 15% in AII. 7.2% of pts in AI presented with stage IV disease vs. 5.9 in AII. Median age at diagnosis was 57 yr (AI) vs. 58 yr (AII); 65.9% vs. 67.2% of pts were postmenopausal. Regarding first treatment (FT) for stage I, II & II...