Breast cancer in the young patient.

Patients under 40 years of age comprise about 5 per cent of the overall breast cancer population. These patients are often considered to have a more aggressive disease and are often treated differently as well. A review was performed of all breast cancer patients reported in the American College of Surgeons Cancer Database from 1998 to 2005. The study cohort included all patients less than 40 years of age. Data collected included stage at time of diagnosis, histologic type, and initial treatment performed. These data were then compared with those of patients age 40 or older. The 70,437 cohort patients identified comprised 5.0 per cent of all breast cancer patients reported. There was a statistically significant difference in stage at the time of presentation: 20 per cent of younger patients presented with advanced disease (stage III or IV) versus 13.5 per cent of older patients. A significantly greater percentage of younger patients also presented with infiltrating ductal carcinoma as opposed to the older population (76.9% vs 67.9%). A significantly greater percentage of young patients was treated with mastectomy when compared with the older population (47.7% vs 36.7%, respectively). This difference persisted even when data were controlled for stage. The younger breast cancer patient presents with more advanced disease, suggesting either a more aggressive disease or a greater delay in diagnosis. Also, at all stages, the young patient tends to be treated more "aggressively" surgically, suggesting that the prevailing concept that breast cancer is a "worse" disease in the young may be directing treatment options and patient choices.