BACKGROUND: The efficacy of adding target prostate biopsy (PBx) of suspected cancer lesions identified on magnetic resonance imaging (MRI) and/or transrectal ultrasonography (TRUS) to initial systematic PBx was evaluated.
Moreover, the outcomes were compared between 2 physicians.
METHODS: We retrospectively investigated 238 patients who underwent first-time PBx in our hospital. All patients were examined with prostate MRI before PBx. Fourteen systematic biopsies were obtained in all patients. When a suspected lesion was present on MRI and/or TRUS, the lesion was the target of target PBx.
RESULTS: The overall detection rate of prostate cancer (PCa) was 45% (106/238). With target PBx, the PCa detection rate was 32% overall, while that of suspected lesions seen only on MRI was 32%, that of suspected lesions seen only on TRUS was 8% and that of suspected lesions seen on both MRI and TRUS was 52%. The same tendency was shown for each physician. Comparing systematic PBx and target PBx, the overall rate of Gleason score (GS) upgrading with target PBx was 13%. The rate of PCa detected only by systematic PBx was 95%. There was no significant difference between the 2 physicians.
CONCLUSION: In initial PBx, the addition of target PBx of suspected cancer lesions detected by MRI and/or TRUS to systematic PBx might not be useful to improve the cancer detection rate. However, it may enable more accurate risk classification and detection of minute cancers with a high GS.
Iwamoto H, Yumioka T, Yamaguchi N, Inoue S, Masago T, Morizane S, Yao A, Honda M, Sejima T, Takenaka A. Are you the author?
Division of Urology, Department of Surgery, School of Medicine, Tottori University Faculty of Medicine, Yonago, Tottori 683-8504, Japan.
Reference: Yonago Acta Med. 2014 Mar;57(1):53-8.