TABLE 1.

Results of Biopsy of Breast Lesions with Mean Age and Size of Tumor

Type of cancerNo. of lesionsMean age ± SD of patients (y)Mean size ± SD of lesion (mm)
Invasive ductal16452.5 ± 10.930.9 ± 21.0
Lobular960.8 ± 7.520.0 ± 9.5
Carcinoma in situ2552.2 ± 14.619.7 ± 10.3
Paget’s  142   —23   —
Medullary  164   —47   —
Papillary  159   —20   —
Mucinous  162   —23   —
Tubular  265   — 5   —
Total20453.3 ± 11.328.7 ± 20