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Abstract

Volume 7, Issue 2 (March 2005) 7, 165–169; 10.1111/j.1745-7262.2005.00019.x

Ultrasound-guided transrectal extended prostate biopsy: a prospective study

Mohammed Ahmed Al-Ghazo, Ibrahim Fathi Ghalayini and Ismail Ibrahim Matalka

Faculty of Medicine, King Abdullah University Hospital, Jordan University of Science and Technology (JUST), Irbid 22110, Jordan

Received: 2004-09-10 Accepted: 2004-12-21

Abstract

Aim: To evaluate the diagnostic value of the 10 systematic transrectal ultrasound-guided (TRUS) prostate biopsy compared with the sextant biopsy technique for patients with suspected prostate cancer.

Methods: One hundred and fifty-two patients with suspected prostate cancer were included in the study. Patients were entered in the study because they presented with high levels of prostate specific antigen (PSA) (over 4 ng/mL) and/or had undergone an abnormal digital rectal examination (DRE). In addition to sextant prostate biopsy cores, four more biopsies were obtained from the lateral peripheral zone with additional cores from each suspicious area revealed by transrectal ultrasound. Sextant, lateral peripheral zone and suspicious area biopsy cores were submitted separately to the pathological department.

Results: Cancer detection rates were 27.6 % (42/152) and 19.7 % (30/152) for the 10–core and sextant core biopsy protocols, respectively. Adding the lateral peripheral zone (PZ) to the sextant prostate biopsy showed a 28.6 % (12/42) increase in the cancer detection rate in patients with positive prostate cancer (P < 0.01). The cancer detection rate in patients who presented with elevated PSA was 29.3 % (34/116). When serum PSA was 4–10 ng/mL TRUS-guided biopsy detected cancer in 20.6 %, while the detection rate was 32.4 % and 47.0 % when serum PSA was 10–20 ng/mL and above 20 ng/mL, respectively.

Conclusion: The 10 systematic TRUS-guided prostate biopsy improves the detection rate of prostate cancer by 28.6 % when compared with the sextant biopsy technique alone, without increase in the morbidity. We therefore recommend the 10–core biopsy protocol to be the preferred method for early detection of prostate cancer.

Keywords: ultrasonography, prostate, biopsy, diagnosis

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Asian Journal of Andrology CN 31-1795/R ISSN 1008-682X  Copyright © 2023  Shanghai Materia Medica, Chinese Academy of Sciences.  All rights reserved.