The diagnostic challenges of core needle biopsy interpretation / Cangiarella -- Morphologic precursors of mammary carcinoma and their mimics / Edi Brogi, Adriana D. Corben, and Melissa P. Murray -- Papillary lesions of the breast / Cansu Karakas, Erika Resetkova, and Aysegul A. Sahin -- Flat epithelial atypia / Melinda F. Lerwill -- Adenosis : mimickers of carcinoma / Juan Palazzo and Jose Palacios Calvo -- Microinvasive carcinoma : diagnosis and pitfalls / Dilip Giri -- Carcinomas with good prognosis / Melissa E. Sanders -- Mesenchymal lesions of the breast / Melinda E. Sanders, John S.J. Brooks, and Juan P. Palazzo -- Lymphomas of the breast / Judith A. Ferry -- Immunohistochemistry in breast pathology / Felipe C. Geyer, Magali Lacroix-Triki, and Jorge S. Reis-Filho