From: Lesions of “uncertain malignant potential” in the breast (B3) identified with mammography screening
Category | Terminology | Meaning |
---|---|---|
B1 | Normal tissue or uninterpretable | Normal or unsatisfactory biopsy |
B2 | Benign | Usual ductal hyperplasia, sclerosing adenosis, fibroadenoma, involutionary calcification, periductal mastitis, hamartoma |
B3 | Benign but of uncertain biological potential | Papillomas, radial scars/complex sclerosing lesions, lobular intraepthithelial neoplasia, atypical epithelial proliferation of ductal type, phylloides tumor |
B4 | Suspicious | Changes suggestive of in situ or invasive malignancy |
B5 | Malignant | Unequivocal malignant process |
a) in situ | ||
b) invasive | ||
c) uncertain whether in situ or invasive | ||
d) other malignancies |