BACKGROUND: Since the risk of carcinoma of the breast is increased in women with a family history of the disease, new primary carcinomas of the breast may be increased after treatment. Women with several relatives with carcinoma of the breast are thought to be at higher risk of having a second primary carcinoma of the breast develop and mastectomy is more frequently recommended. STUDY DESIGN: The computerized registry of the Mount Sinai Medical Center Breast Service was used to identify 1,337 patients with complete information concerning family history. Three hundred fifty-nine patients with a family history of carcinoma of the breast were compared with women with no family history. RESULTS: Compared with patients with no family history of carcinoma of the breast, patients with a family history of carcinoma of the breast were significantly younger (54.0 versus 55.8 years of age, p < 0.01), were significantly more likely to have used oral contraceptives (26 versus 13 percent, p < 0.001), had significantly more ductal carcinoma in situ (10 versus 4 percent, p < 0.01), and were significantly more often treated with breast conservation (42 versus 31 percent, p < 0.001). Simultaneous contralateral carcinoma of the breast was diagnosed more frequently in patients with a family history (3 versus 1 percent, p < 0.025), but metachronous contralateral carcinomas were not increased. In comparing the two groups, there were no significant differences in proportion premenopausal, parity, use of postmenopausal hormones, tumor size, tumor differentiation, nodal involvement, TNM stage, estrogen receptor status, or use of adjuvant radiation, chemotherapy, or tamoxifen. Complete five-year follow-up evaluation for 748 patients, 179 with a family history, found no differences in local, distant, or disease-free survival rates for mastectomy or breast conservation in relation to family history. Outcome for patients with first-degree affected relatives and those with more than one affected relative was the same as those with no family history. CONCLUSIONS: These results indicate that women with a family history of carcinoma of the breast should be treated no differently than women with no family history.
BACKGROUND: Since the risk of carcinoma of the breast is increased in women with a family history of the disease, new primary carcinomas of the breast may be increased after treatment. Women with several relatives with carcinoma of the breast are thought to be at higher risk of having a second primary carcinoma of the breast develop and mastectomy is more frequently recommended. STUDY DESIGN: The computerized registry of the Mount Sinai Medical Center Breast Service was used to identify 1,337 patients with complete information concerning family history. Three hundred fifty-nine patients with a family history of carcinoma of the breast were compared with women with no family history. RESULTS: Compared with patients with no family history of carcinoma of the breast, patients with a family history of carcinoma of the breast were significantly younger (54.0 versus 55.8 years of age, p < 0.01), were significantly more likely to have used oral contraceptives (26 versus 13 percent, p < 0.001), had significantly more ductal carcinoma in situ (10 versus 4 percent, p < 0.01), and were significantly more often treated with breast conservation (42 versus 31 percent, p < 0.001). Simultaneous contralateral carcinoma of the breast was diagnosed more frequently in patients with a family history (3 versus 1 percent, p < 0.025), but metachronous contralateral carcinomas were not increased. In comparing the two groups, there were no significant differences in proportion premenopausal, parity, use of postmenopausal hormones, tumor size, tumor differentiation, nodal involvement, TNM stage, estrogen receptor status, or use of adjuvant radiation, chemotherapy, or tamoxifen. Complete five-year follow-up evaluation for 748 patients, 179 with a family history, found no differences in local, distant, or disease-free survival rates for mastectomy or breast conservation in relation to family history. Outcome for patients with first-degree affected relatives and those with more than one affected relative was the same as those with no family history. CONCLUSIONS: These results indicate that women with a family history of carcinoma of the breast should be treated no differently than women with no family history.
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