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Table 1 Reporting categories of Needle Biopsies

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