Xeromammography: five years and 559 carcinomas.

This study encompasses five years and includes 559 cancers, diagnosed at the Kaiser-Permanente Medical Center, Los Angeles, California. With current low-dose techniques, we have shown the efficacy of xeromammography, even in younger women. One third of the breast cancers, one third of the occult breast cancers, occurred in women under 50 years of age. Most important are the 161 occult cancers which were detected radiographically in these five years.