Adenomas

Tubular Adenoma

Lactating Adenoma

Ductal Adenoma

Adenosis and Benign Sclerosing Lesions

Apocrine Adenosis and Adenoma

Microglandular Adenosis

Radial Scar/Complex Sclerosing Lesion

Sclerosing Adenosis

Benign Epithelial Proliferations and Precursors

Usual Ductal Hyperplasia

Columnar Cell Lesions, including Flat Epithelial Atypia

Atypical Duct Hyperplasia (ADH)

DCIS

Epithelial-Myoepithelial Tumors

Pleomorphic Adenoma

Adenomyoepithelioma

Malignant Adenomyoepithelioma

Invasive Breast Cancer

Invasive Breast Cancer, NOS

Microinvasive Carcinoma

Invasive Lobular Carcinoma

Tubular Carcinoma

Mucinous Carcinoma

Invasive Micropapillary Carcinoma

Metaplastic Carcinoma

Non-invasive Lobular Neoplasia

ALH

LCIS 

Papillary Neoplasms

Intraductal papilloma

Encapsulated Papillary Carcinoma

Invasive Papillary Carcinoma

Papillary DCIS

Solid Papillary Carcinoma

Rare and Salivary Gland-Type Tumors

Acinic Cell Carcinoma

Adenoid Cystic Carcinoma

Secretory Carcinoma

Mucoepidermoid Carcinoma

Polymorphous Adenocarcinoma

Tall Cell Carcinoma with Reversed Polarity

Neuroendocrine neoplasms

Neuroendocrine tumor

Neuroendocrine carcinoma

Hamartoma

Fibroadenoma

Phyllodes Tumor

Syndromes

Ataxia-Telangiectasia

BRCA1/2-associated hereditary breast and ovarian cancer syndrome

CDH1-associated Breast Cancer

Cowden Syndrome

Li-Fraumeni Syndrome, TP53-associated

Li-Fraumeni Syndrome, CHEK2-associated

Neurofibromatosis Type 1

PALB2-associated cancers

Peutz-Jeghers Syndrome

The polygenic component of breast cancer susceptibility

Lymphoma

Extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma)

Follicular lymphoma

Diffuse large B-cell lymphoma

Burkitt lymphoma

Breast implant-associated anaplastic large cell lymphoma

Adipocytic Tumors

Angiolipoma

Lipoma

Liposarcoma

Fibroblastic and Myofibroblastic Tumors

Desmoid Fibromatosis

Inflammatory Myofibroblastic Tumor

Myofibroblastoma

Nodular Fasciitis

Other Mesenchymal Tumors and Tumor Like Conditions

Pseudoangiomatous Stromal Hyperplasia 

Peripheral Nerve Sheath Tumor

Granular Cell Tumor

Neurofibroma

Schwannoma

Smooth Muscle Tumors

Leiomyoma

Leiomyosarcoma

Vascular Tumors

Angiomatosis

Atypical Vascular Lesion

Hemangioma

Postradiation Angiosarcoma of the Breast

Primary Angiosarcoma of the Breast

Epithelial tumors

Carcinoma in Situ

Gynecomastia

Invasive carcinoma

Metastases to the breast

Nipple Adenoma

Paget Disease of the Breast

Syringomatous Tumor