Dr. Singh has provided a notable and extraordinarily complete atlas of the histopathology of human breast disease. Migrating through the categories is almost effortless, and shifting among them is straightforward. I am particularly enthused about the presentation of some specific areas that can be problematic in over-diagnosis of in situ cancers. Specifically, the many photomicrographs of atypical lobular hyperplasia and atypical ductal hyperplasia will guide pathologists to the proper diagnostic posture of avoiding over-diagnosis of carcinoma in situ. Another specific example of usefulness is the image of radiation changes in normal breast tissue – a frequent source of confusion in biopsies of breasts previously exposed to chemotherapy and/or radiation therapy.

In summary, the ease of access and completeness of this effort should make it educational and be a practical guide in the modern and complex management of breast disease.

David L. Page, MD