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pubmed-article:19949677pubmed:abstractTextWe investigated the correlation between Cyclooxygenase-2 (COX-2) expression and the tumor response in patients with cervical cancer that were treated with curative radiotherapy (RT). Fifty-seven patients with squamous cell carcinoma were treated with concurrent radiochemotherapy (CRCT, n=29) or RT alone (n=28). The response of each patient was evaluated by three serial Magnetic Resonance Imaging examinations: before the start of RT, at four weeks after the start of RT (mid-RT) and at four weeks after the completion of RT (post-RT). Forty-three patients had positive COX-2 expression. The COX-2 negative patients achieved a higher rate of complete response (CR) at mid-RT than did the COX-2 positive patients (28.6% vs. 7.0%, P=0.054), but not at post-RT (64.3% vs. 69.8%). The initial tumor volume was a significant predictor of CR at mid-RT (P=0.003) and post-RT (P=0.004). The multivariate analysis showed that the initial tumor volume (at mid-RT and post-RT) and CRCT (at post-RT) were significant predictors of CR; however, the COX-2 expression was not. In conclusion, the COX-2 expression status has no significant correlation with the tumor response. Further studies on the changes in COX-2 expression levels during RT may be helpful for determination of its role in the tumor response to treatment and patient prognosis.lld:pubmed
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pubmed-article:19949677pubmed:authorpubmed-author:ChoEun YoonEYlld:pubmed
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pubmed-article:19949677pubmed:authorpubmed-author:KangMin KyuMKlld:pubmed
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pubmed-article:19949677pubmed:authorpubmed-author:OhDong RyulDRlld:pubmed
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pubmed-article:19949677pubmed:articleTitleThe effect of cyclooxygenase-2 expression on tumor volume response in patients treated with radiotherapy for uterine cervical cancer.lld:pubmed
pubmed-article:19949677pubmed:affiliationDepartment of Radiation and Oncology, Yeungnam University College of Medicine, Daegu, Korea.lld:pubmed
pubmed-article:19949677pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:19949677pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
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