. Author manuscript; available in PMC: 2011 Jun 1.

Published in final edited form as: Cancer Causes Control. 2010 Jan 19;21(6):821–828. doi: 10.1007/s10552-010-9508-7

Table 2.

Classification of breast cancer biopsy results of 1,239 women

BBD risk level	Biopsy result/lesion	n^a
Non-proliferative disease/normal pathology	Fibrosis	807
	Cysts	366
	Apocrine metaplasia	527
	Simple fibroadenoma	124
	No lesion	252
Proliferative disease without atypia	Epithelial hyperplasia without atypia	560
	Columnar cell hyperplasia without atypia	124
	Complex fibroadenoma without atypia	52
	Sclerosing adenosis	298
	Radial scar	34
	Papilloma	119
Proliferative disease with atypia	Atypical ductal hyperplasia	19
	Atypical lobular hyperplasia	21
	Atypical columnar hyperplasia	6
	Complex fibroadenoma with atypia	1

BBD lesions may include more than one type