Normal anatomy and histology -- Reactive, inflammatory, and nonproliferative lesions -- Intraductal proliferative lesions : usual ductal hyperplasia, atypical ductalhyperplasia, and ductal carcinoma in situ -- Columnar cell lesions and flat epithelial atypia -- Lobular carcinoma in situ and atypical lobular hyperplasia -- Fibroepithelial lesions -- Adenosis and sclerosing lesions -- Papillary lesions -- Microinvasive carcinoma -- Invasive breast cancer -- Spindle cell lesions -- Vascular lesions -- Other mesenchymal lesions -- Miscellaneous rare lesions -- Nipple disorders -- Male breast lesions -- Breast lesions in children and adolescents -- Axillary lymph nodes -- Treatment effects -- Specimen processing, evaluation, and reporting

1. Breast -- Biopsy
2. Breast -- Diseases -- Cytodiagnosis
3. Breast -- Cancer -- Cytodiagnosis
4. Breast Neoplasms -- diagnosis
5. Breast Neoplasms -- pathology
6. Biopsy -- methods
7. Diagnosis
8. Differential