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Original Research

Med Arh. 2012; 66(1): 41-44


Influence of the Prostate Volume, Prostate Specific Antigen Density and Number of Biopsy Samples on Prostate Cancer Detection

Damir Aganovic, Alden Prcic, Benjamin Kulovac, Osman Hadziosmanovic.

Cited by (2)

Abstract
Aim: Establish the main differences in the prostate volume, prostate specific antigen density (PSAD), number of biopsy samples in patients with primarily or rebiopsy detected prostate cancer. Materials and methods: In the 2007-2009 period, at the KCUS Urology Clinic, there were 379 TRUS guided prostate biopsies in 323 patients with known prostate volume. The total of 56 patients (17.3%) underwent the first rebiopsy, primarily due to precancerous lesions. The mean prostate volume, ranges of prostate size, PSAT, PSAD and the number of biopsy samples were analysed retrospectively, and the main characteristics in patients with primarily and rebiopsy diagnosed Pca were evaluated as well. Results: The first biopsy cancer detection rate was 29.6% (112/379). The rebiopsy detection rate was 30.3%. There was no statistically significant difference in the prostate volume and the number of biopsy samples among the total number of patients with prostate cancer against the group with benign (suspected) findings. There was a higher Pca detection rate in patients with the prostate volume 60 cm3. PSAD was significantly higher in patients with PCa (0.24 vs. 0.18; p=0.013). The total of 27.2% of the patients with negative biopsy findings and 48% of the patients with diagnosed Pca had PSAD >0.15. PSAD showed sensitivity and specificity in prostate cancer detection of 50% and 75%, with PPV of 48%. Furthermore, the patients with PSAD >0.15 had a higher Gleason score versus the patients with PSAD

Key words: PCa, prostate biopsy, prostate volume, PSAD.


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