Prediction of pathological stage and clinical outcome in prostate cancer: an improved pre-operative model incorporating biopsy-determined intraductal carcinoma

British Journal of Urology
R J CohenI P Mundy

Abstract

To relate the predictive value of serum prostate specific antigen (PSA) levels, histological grade and intraductal carcinoma (IDC-P, a possible marker of poor prognosis) to pathological stage and subsequent clinical outcome, and thus derive an improved predictive model to aid the decision to initiate potentially curative therapy in localized prostate cancer. Fifty-nine radical prostatectomy specimens were histologically graded, allocated a pathological stage and the tumour volume determined by image analysis. Pre-operative (needle biopsy) tumour grade, the presence or absence of IDC-P, and serum PSA levels were correlated with the pathological stage. This was used to define the sequence and values that would be incorporated into a predictive model for pathological stage and clinical outcome. There were close correlations between cancer volume and tumour grade (P = 0.004) and between cancer volume and serum PSA level (P = 0.003). However, in tumours with IDC-P, serum PSA level did not correlate with tumour volume of IDC-P (P > 0.9). IDC-P was an independent variable that significantly improved the prediction of pathological stage and tumour volume, and furthermore, was closely related to (r = 0.53, P = 0.001) and accurately pred...Continue Reading

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