Mammographic features predicting an extensive intraductal component in early-stage infiltrating ductal carcinoma.

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Abstract
Several studies have shown that the presence of an extensive intraductal component in patients with infiltrating ductal carcinoma is a major factor for predicting local recurrence after breast-conserving surgery and radiotherapy. A prospective study of 101 consecutive mammograms in patients with stage I or II infiltrating ductal carcinoma was performed to determine the predictive values of mammographic features in determining the presence or absence of an extensive intraductal component. Thirty-five (35%) of the lesions contained a pathologically verified extensive intraductal component. Sixty-five percent (22/34) of lesions showing mammographic evidence of calcifications with or without a mass were associated with an extensive intraductal component (p less than .001). Lesions with calcifications greater than 3 cm in extent were significantly (p less than .05) more likely to have an extensive intraductal component (9/10; 90%) than those with calcifications less than 3 cm in extent (13/24; 54%). Only 17% (...

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