Abstract
To evaluate characteristics predictive of nipple-areola complex (NAC) involvement by the breast tumor. Cases of infiltrative ductal carcinoma (stages I, IIA and IIB) treated by mastectomy in which the distance between the tumor and the NAC was >or=2 cm were included. NAC involvement was evaluated using serial histological sections. The distance between the tumor and the NAC was measured on mammograms. Other parameters taken into consideration were: tumor size, histological and nuclear grades, vascular invasion, and the presence of an in situ component. For comparisons between categorical variables, the chi-square test or Fisher's exact test were used. Student's t-test was used for numerical variables with normal distribution and the Mann-Whitney U-test was applied when distribution was not normal. Fifty patients were included. NAC was affected in 12 and unaffected in 38. There was no statistically significant difference in mean age between the unaffected and affected groups (58.9+/-13.5 years versus 55.8+/-12.5 years, p=0.477); however, 13.2% and 58.3% (p=0.046) in the NAC-unaffected and NAC-affected groups, respectively, were <50 years of age. Distance <or=3 cm between the tumor and the NAC on mammograms was found in 60.5% of ...Continue Reading
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