1. Schnitt SJ, Vincent-Salomon A. Columnar cell lesions of the breast. Adv Anat Pathol. 2003;10:113–24.
2. Schnitt SJ, Collins L, Lakhani SR. Flat epithelial atypia. In: Lakhani SR, Ellis IO, Schnitt SJ, Tan PH, van der Vijver MJ, editors. World health organization classification of tumours. 4th ed. Lyon, France: International Agency for Research on Cancer (IARC); 2012. p. 87.
3. Azzopardi JG, Ahmed A, Millis RR. Problems in breast pathology. Major Probl Pathol. 1979;11:i–xvi.
4. Eusebi V, Foschini MP, Cook MG, et al. Long-term follow-up of in situ carcinoma of the breast with special emphasis on clinging carcinoma. Semin Diagn Pathol. 1989;6:165–73.
5. Moinfar F, Man YG, Bratthauer GL, et al. Genetic abnormalities in mammary ductal intraepithelial neoplasia-flat type (“clinging ductal carcinoma in situ”): a simulator of normal mammary epithelium. Cancer. 2000;88:2072–81.