Breast lumps:

Less than one-fourth of all breast lumps are found to be cancerous, but benign breast disease can be difficult to distinguish from cancer. Consequently, all breast lumps should be checked by a health care professional.
- Reviewed last on: 12/31/2008
- David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Redmond, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.