Detection of prostate cancer in an ethnically diverse, disadvantaged population with multiple prostate specific antigen measurements before biopsy

The Journal of Urology
A Ari HakimiFarhang Rabbani

Abstract

We assessed the predictive effect of prostate specific antigen velocity for men with a minimum of 3 pre-biopsy prostate specific antigen measurements in a racially diverse population. We identified 795 patients who underwent 3 or more prostate specific antigen tests before prostate biopsy. Prostate specific antigen velocity was calculated by linear regression and used to assess associations with the risk of prostate cancer overall and of high grade prostate cancer (Gleason score 7-10). We created ROC curves and determined the AUC for several models, including only prostate specific antigen velocity or the last prostate specific antigen measurement before biopsy, to predict prostate cancer and high grade prostate cancer. The risk of prostate cancer and high grade prostate cancer increased linearly with increasing prostate specific antigen velocity quartiles (each p trend<0.001). Older patients were more likely to be diagnosed with prostate cancer, given the same prostate specific antigen velocity. In black and Hispanic patients there were strong linear associations between increasing prostate specific antigen velocity and the risk of prostate cancer overall and high grade prostate cancer. ROC curves incorporating prostate specif...Continue Reading

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