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. 2004 Jul 27;91(5):873–878. doi: 10.1038/sj.bjc.6602074

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Copyright © 2004 Cancer Research UK

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Changes in serum CYFRA 21-1 titres of patients with elevated levels at preoperation. Residual sites are within parentheses. A recurrent site is demonstrated for each case, and the postoperation time until recurrence is shown within parentheses. The open circle indicates a patient with an elevated level of serum CYFRA 21-1 at postoperation, who nevertheless has shown no evidence of relapse.