There was a significant trend towards a decrease in CTCs after treatment. 70 In a separate analysis, they compared the change in CTCs in the biochemically favourable and unfavourable groups.
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Circulating tumour cells for the prediction of the response to radiation therapy in prostate cancer.
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They described a significant positive correlation of CTC status with positive tumour resection margins and a trend towards significance with the presence of seminal vesicle invasion and extracapsular extension, predictive of poor response to RT.