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BJU Int. 2014 Apr;113(4):548-53. doi: 10.1111/bju.12517. Epub 2014 Feb 14.

Incremental detection rate of prostate cancer by real-time elastography targeted biopsies in combination with a conventional 10-core biopsy in 1024 consecutive patients.

Author information

1
Martini-Clinic, Prostate Cancer Center Hamburg-Eppendorf, Hamburg, Germany.

Abstract

OBJECTIVE:

To quantify the incremental detection rate (DR) of a targeted biopsy in addition to a randomized 10-core biopsy.

PATIENTS AND METHODS:

This retrospective study analysed 1024 patients who consecutively underwent a four-core real-time elastography (RTE) targeted biopsies in addition to a randomized 10-core transrectal ultrasonography (TRUS)-guided biopsy in a primary or rebiopsy setting. The overall DR, the DR of a 10-core randomized, RTE targeted biopsy and the incremental DR were calculated.

RESULTS:

Overall, randomized and RTE targeted biopsy DRs (for the combination, the 10-core and the four-core RTE biopsy scheme) were 46.2% (n = 473), 39.1% (n = 400) and 29.0% (n = 297), respectively. Four-core RTE targeted biopsies detected an additional 73 patients not detected by the 10-core randomized biopsies (increase in the overall DR of 7.1%). This represented a relative increase in DR of 18.3%. The incremental DR was better in rebiopsy patients (24.8%) than in patients having their first biopsy (14.7%). Within all patients diagnosed by RTE targeted biopsy only, 34 patients harboured significant Gleason 4 or 5 prostate cancer (PCa), diagnosed by four-core RTE biopsy only. Moreover, PCa with a Gleason grade of 4 or 5 was detected by four-core RTE biopsies in 30 patients, who showed low-grade PCa ≤ Gleason 3 only in the systematic 10-core biopsy.

CONCLUSIONS:

Real-time elastography targeted biopsy seems to be an appropriate method for increasing the DR of PCa. Nevertheless, RTE targeted biopsies missed a high proportion of patients with PCa and should therefore be considered as an addition to randomized biopsies.

KEYWORDS:

detection rate; elastography; prostate biopsy; prostate cancer

PMID:
24128330
DOI:
10.1111/bju.12517
[Indexed for MEDLINE]
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