The type of mammary ductal carcinoma in situ (DCIS) most likely to result in a palpable abnormality in the breast is:
Apocrine DCIS
Neuroendocrine DCIS
Well differentiated DCIS
Comedo DCIS
Before the use of screening mammography, ductal carcinoma in situ (DCIS) typically presented as a palpable mass or nipple discharge. Ref: Robbin's Basics of Pathology , 7th Edition, Page I139; Management of Breast Diseases By Ismail Jatoi, Manfred Kaufmann, 2010, Page 206; Perez and Brady's Principles and Practice of Radiation Oncology By Edward C. Halperin, Carlos A. Perez, Luther W. Brady, 2008, Page 438.