The effect of local therapy on the survival of patients withbreast cancer has been debated for decades. Three viewpointshave been proposed on the basis of various hypotheses concerningthe biology of breast cancer. Is breast cancer a local diseasethat spreads predictably over time to develop distant metastases?Is it a systemic disease from the outset, with distant metastasespresent well before diagnosis? Or is the truth somewhere inbetween, with many cancers being localized at diagnosis and,if untreated or recurrent, acquiring the ability to metastasizeand kill? These differing views have vastly different implicationsfor the . . . [Full Text of this Article]
Three Theories of Cancer Spread
Evidence from Clinical Trials
Benefits from Improved Local Control
Understanding Recurrent Disease
Future Directions
Source Information
From the Departments of Radiation Oncology (R.S.P., J.R.H.) and Medical Oncology (E.P.W.), DanaFarber Cancer Institute; Brigham and Women's Hospital (R.S.P., E.P.W., J.R.H.); and Harvard Medical School (R.S.P., E.P.W., J.R.H.) all in Boston; and the Department of Surgical Oncology, Fox Chase Cancer Center, Philadelphia (M.M.).
Address reprint requests to Dr. Punglia at the Department of Radiation Oncology, DanaFarber Cancer Institute, 44 Binney St., Smith 274, Boston, MA 02115, or at rpunglia@lroc.harvard.edu.
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