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Objective: To determine the consequence of recognizing high grade prostatic intraepithelial neoplasia (HGPIN) & its extent on initial sextant prostatic biopsy then identifying its associated risk of finding prostate cancer on subsequent biopsy. Patients and methods: Seventy-one men were subjected to transrectal ultrasound guided sextant prostate biopsy due to elevated serum prostate specific antigen (S.PSA) > 4 ng /ml, an abnormal digital rectal examination (DRE) and/or transrectal ultrasound (TRUS) findings. The number, percentage, as well as bilateral and multifocal involvement of specimens positive for HGPIN were recorded in every patient. The percentage of cancer detected in these patients on repeat biopsy within 1 year of the initial biopsy was also recorded. Results: The mean age and mean S.PSA level of our patients was 59.9 years and 7.9 ng/ml respectively. Of the 71 patients studied, initial biopsy revealed that (32.4%) had benign prostatic hyperplasia (BPH), (36.62%) had carcinoma, (25.35%) had HGPIN and (5.63%) had chronic prostatitis. On repeat biopsy within 1 year of initial biopsy cancer of the prostate was detected in 33.3% of our patients who were diagnosed with HGPIN on 1st biopsy. All of them had multifocal involvement on the initial biopsy. Conclusion: Recognizing HGPIN on 1st biopsy (particularly multifocal involvement) is associated with great risk of prostate cancer development on subsequent biopsy, thus comprehensive follow-up of these patients is necessary.

Is High Grade Prostatic Intraepithelial Neoplasia a Risk Factor for Prostate Cancer?—A Local Study