This issue of Surgical Pathology Clinics, edited by Dr. Laura C. Collins, will focus on Breast Pathology. Topics include, but are not limited to: Core needle biopsy of the breast, Mucinous Lesions of the Breast: Pragmatic approach to fibroepithelial lesions; Lymph node inclusions; Differential diagnosis of benign spindle cell lesions of the breast; Ancillary Prognostic and Predictive Testing in Breast Cancer; Lesions of the Low Grade Breast Neoplasia Pathway; Genotype-Phenotype Correlation in Breast Neoplasia; Lobular Carcinoma in Situ; and Processing and Reporting of Breast Specimens in the Neoadjuvant Setting.