Analysis of interval cancers in the Program of Early Diagnosis of Cancer of the Breast of the Community of Valencia. Group of Readers of the Prevention Units of Cancer of the Breast

A retrospective search was performed of interval cancers in the Programa de Prevención de Cáncer de Mama de la Comunidad Valenciana. The cancer rate observed was 0.5 per 1,000 women studied. The mean diagnostic time from the first mammography was 11 months, and the most frequent detection means was a positive palpation. The frequency was higher in women aged less than 55 years. More "non-common" histologic types were found and a lower percentage of conservative therapies regarding cancers detected at the first round of the Program, although the stage was similar to the latter.