Predictive Factors of Esophageal Stenosis Associated with Tumor Regression in Radiation Therapy for Locally Advanced Esophageal Cancer
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概要
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The purpose of this retrospective study was to clarify the predictive factors correlated with esophageal stenosis within three months after radiation therapy for locally advanced esophageal cancer. We enrolled 47 patients with advanced esophageal cancer with T2-4 and stageII-III who were treated with definitive radiation therapy and achieving complete response of primary lesion at Kyushu University Hospital between January 1998 and December 2005. Esophagography was performed for all patients before treatment and within three months after completion of the radiation therapy, the esophageal stenotic ratio was evaluated. The stenotic ratio was used to define four levels of stenosis: stenosis level 1, stenotic ratio of 0-25%; 2, 25-50%; 3,50-75%; 4,75-100%. We then estimated the correlation between the esophageal stenosis level after radiation therapy and each of numerous factors. The numbers and total percentages of patients at each stenosis level were as follows: level 1: n = 14 (30%); level 2: 8 (17%); level 3: 14 (30%); and level 4: 11 (23%). Esophageal stenosis in the case of full circumference involvement tended to be more severe and more frequent. Increases in wall thickness tended to be associated with increases in esophageal stenosis severity and frequency. The extent of involved circumference and wall thickness of tumor region were significantly correlated with esophageal stenosis associated with tumor regression in radiation therapy (p = 0.0006, p = 0.005). For predicting the possibility of esophageal stenosis with tumor regression within three months in radiation therapy, the extent of involved circumference and esophageal wall thickness of the tumor region may be useful.
- Journal of Radiation Research 編集委員会の論文
著者
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NOMOTO SATOSHI
Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
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Shioyama Yoshiyuki
Department Of Clinical Radiology Graduate School Of Medical Sciences Kyushu University
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Shioyama Yoshiyuki
九州大学 医学研究院臨床放射線科学
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Shioyama Yoshiyuki
九州大学病院別府先進医療センター 放射線科
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NONOSHITA Takeshi
Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
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NAKAMURA Katsumasa
Department of Radiology, Kyushu University Hospital at Beppu
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YOSHITAKE Tadamasa
Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
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Ohga Saiji
Department Of Clinical Radiology Graduate School Of Medical Sciences Kyushu University
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Nomoto Satoshi
Department Of Clinical Radiology Graduate School Of Medical Sciences Kyushu University
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ATSUMI Kazushige
Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
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HIRATA Hideki
School of Health Sciences, Kyushu University
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Nonoshita Takeshi
Department Of Clinical Radiology Graduate School Of Medical Sciences Kyushu University
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Asai Kaori
Department Of Clinical Radiology Graduate School Of Medical Sciences Kyushu University
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Ueda Masanobu
Department Of Clinical Radiology Graduate School Of Medical Sciences Kyushu University
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Hirata Hideki
School Of Health Sciences Kyushu University
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Honda Hiroshi
Department Of Agricultural Chemistry Tokyo University Of Agriculture
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Nakamura Katsumasa
Department Of Radiology Kyushu University Hospital At Beppu
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Yoshitake Tadamasa
Department Of Clinical Radiology Graduate School Of Medical Sciences Kyushu University
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Nakamura Katsumasa
Department Of Radiology Faculty Of Medicine Kyushu University
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Atsumi Kazushige
Department Of Clinical Radiology Graduate School Of Medical Sciences Kyushu University
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Nakamura Katsumasa
Department Of Clinical Radiology Graduate School Of Medical Sciences Kyushu University
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Hirata Hideki
School Of Health Sciences Faculty Of Medicine Kyushu University
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Nakamura Katsumasa
Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University
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