© 2000 by Oxford University Press
Journal of the National Cancer Institute, Vol. 92, No. 5, 361-362,
March 1, 2000
© 2000 Oxford University Press
EDITORIALS |
Defining the Optimal Therapy for Rectal Cancer
Correspondence to: Daniel G. Haller, M.D., Department of Medicine, University of Pennsylvania Cancer Center, 16 Penn Tower, 3400 Spruce St., Philadelphia, PA 19104 (e-mail: dhaller@mail.med.upenn.edu).
For physicians trained in the United States,
postoperative combined modality therapy has become the accepted
standard for patients with rectal cancer who are at high risk for
locoregional and distant recurrence. In 1990, the results of two
randomized trials demonstrating improved survival for postoperative
chemotherapy with radiation therapy compared with either surgery alone
or with postoperative radiation therapy alone led to an National
Institutes of Health Consensus Conference recommendation that all
patients with stage II or III rectal cancer should receive
postoperative combined modality therapy. Two subsequent intergroup
trials have retained control arms of postoperative radiation therapy
with 5-fluorouracil-based chemotherapy, perpetuating the role of such
treatment in clinical practice. However, there is not universal
agreement that high-risk patients require all three modalities of
therapysurgery, radiation therapy, and chemotherapyor even the
proper order of such therapy. There is widespread use of preoperative
radiation therapy given without chemotherapy in Europe. At least
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