Accuracy of Diagnosis for Prostate Cancer

Summary: The accuracy of prostate cancer (PCA) diagnosis was evaluated in the subjects examined by mass screening for prostate cancer. We investigated the accuracy by the follow-up study and the Prostate Cancer Registry in Gunma Prefecture. The cause of incorrect diagnosis was stratified into 4 groups: [1] the incorrect diagnosis at mass screening, [2] the incorrect diagnosis by urologists at the hospital, [3] the biopsy-rejection by subjects with abnormal examination, and [4] incorrect diagnosis by prostate biopsy. We also analyzed the period from the initial diagnosis to the cancer confirmation and clinical st…