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The present study was undertaken on cases of prostate carcinoma and we tried to determine the relationship of elevated prostate specific antigen (PSA) level to histopathologic features associated with cancer in prostate biopsies and their relation to newest grade groups. Materials and Methods: The study was conducted in a tertiary health care center over a span of 3 years on patients with prostatic adenocarcinoma. The hematoxylin and eosin sections were reviewed as per World Health Organization 2016 new grading system and various other associated histopathological findings in the tissue noted. We tried to analyse correlation between serum PSA levels and histopathological features. Results: The majority of patients were in the age group of 70–80. Many patients (9/44) had the PSA in the range of 20–40 ng/ml and 10 patients (22.7%) had 80–100 ng/ml. There were three patients with normal PSA level and six patients with borderline level. Nine of 10 patients with marked increase in PSA level had higher grade groups. Histological subtyping showed 42 cases of acinar adenocarcinoma and 2 cases of ductal carcinoma. A number of associated findings were seen like benign prostatic hyperplasia (BPH): 13 cases, prostatitis: 28 cases, prostatic intraepithelial neoplasia: 7 cases - Low grade (1 case) and high grade (6 cases), and atrophy: 9 cases. Conclusions: We noticed majority of patients with grade group (GG) 3 and above had PSA value of more than 40 ng/ml, but PSA of <40 ng/ml did not correlate with the histologic grade groups. There was significant cut off value of PSA level 20 ng/ml between GG2 and GG3, differentiation of which is of clinical and histopathological significance. Histological subtyping showed acinar adenocarcinoma has no significant correlation with PSA levels however ductal carcinoma was associated with PSA levels <20 ng/ml. BPH association was seen to have PSA level of <40 ng/ml in majority of cases. The intensity of inflammation did not correlate with either degree of PSA level or histologic GG. We concluded serum PSA assay has prognostic application in the evaluation of patients undergoing prostate biopsies.

Relation of Serum Prostate-Specific Antigen with Histological Features and Grading of Prostate Adenocarcinoma in Prostatic Biopsies