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Radiation Oncology: Contributions of the United States in the Last Years of the 20th Century¹

¹ From the Department of Radiation Oncology, MCP-Hahnemann University, Broad and Vine Sts, MS 200, Philadelphia, PA 19102 (L.W.B.); Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pa (S.K.); Department of Therapeutic Radiology, University of Minnesota, Minneapolis (S.H.L.); Department of Radiation Oncology, University of California at Los Angeles (R.G.P.); and the Department of Radiation Oncology, Wayne State University, Detroit, Mich (W.E.P.). Received April 11, 2000; revision requested May 26; revision received August 28; accepted August 30. Address correspondence to L.W.B. (e-mail: lwb23@drexel.edu).

The advancements in radiation oncology in the past 50 years in the United States were probably more dramatic than those in the first half of the 20th century. Not only were there major technical achievements, but there was also an associated increase in the overall cure rates of cancer, from 20% at 5 years 50 years ago to now nearly 60% at 5 years. The cure rates in selected tumor sites at 5 years in 1950 and in 2000, respectively, were as follows: breast, 50% and 80%; colon and rectum, 40% and 85%; lung, 5% and 15%–20%; prostate, 40% and 80%; Hodgkin disease, 50% and more than 90%; cervix, 40% and 70%–80%; uterus (endometrium), 80% and more than 90%; bladder, 30% and 50%; head and neck, 30% and 60%; and esophagus, 2% and 15%. Much of this has been due to a broader array of techniques in radiation therapy available for treatment but also because of new emphasis on combined integrated modalitities (surgery, radiation therapy, and chemotherapy). New imaging techniques have contributed substantially, allowing better selection of patients for treatment and better selections of treatment modalities.

Index terms: Neoplasms, experimental studies • Radiobiology • Radiology and radiologists, history • Radiology and radiologists, research • Reflections • Therapeutic radiology

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