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The capsular and perineural invasion and the Gleason score were correlated to biochemical recurrence (Log-Rank p < 0.05). We defined low and high level of IL-8 according to the threshold 6.731 pg/ml defined by the ROC curve. Biochemical recurrence did not correlate to IL-8 (Log-Rank p > 0.05).
ROC: Receiver operating characteristic.
