Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Pathology of 51 non-mass-like lesions
| Pathology | Numbers |
| A1 group | 25 |
| Adenosis | 17 |
| Intraductal papilloma | 5 |
| Plasma cell mastitis | 2 |
| Vascular smooth muscle hamartoma | 1 |
| A2 group | 3 |
| Sclerosing adenosis | 1 |
| Epithelial columnar cell lesion | 1 |
| Atypical ductal or lobular hyperplasia | 1 |
| B group | 23 |
| Intraductal carcinoma in situ | 14 |
| Invasive ductal carcinoma | 7 |
| Invasive lobular carcinoma | 1 |
| Mucous carcinoma | 1 |
