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Chinese Journal of Medical Ultrasound (Electronic Edition) ›› 2023, Vol. 20 ›› Issue (03): 307-312. doi: 10.3877/cma.j.issn.1672-6448.2023.03.009

• Genitourinary Ultrasound • Previous Articles     Next Articles

Application value of contrast-enhanced ultrasound in prostate cancer biopsy in patients with different prostate specific antigen levels

Jianhui Cao, Dong Xu, Bin Feng, Junbiao Zheng, Weiwei Huang()   

  1. Department of Ultrasound, First People's Hospital of Jiashan County, Jiashan 314100, China
    Department of Ultrasound, Affiliated Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Provincial Cancer Hospital), Hangzhou 310022, China
    Department of Urology, First People's Hospital of Jiashan County, Jiashan 314100, China
  • Received:2021-10-03 Online:2023-03-01 Published:2023-07-05
  • Contact: Weiwei Huang

Abstract:

Objective

To evaluate the value of contrast-enhanced ultrasound (CEUS) in prostate cancer biopsy in patients with different prostate specific antigen (PSA) levels.

Methods

From October 2017 to July 2021, 593 patients who had elevated serum PSA (≥4 ng/ml) and underwent transperineal prostate biopsy at the First People's Hospital of Jiashan County, Zhejiang Province were enrolled. They were divided into either a conventional ultrasound group (group A, 319 cases) or a CEUS group (group B, 274 cases) based on whether CEUS was performed before biopsy or not. Moreover, the two groups of patients were further divided into 6 subgroups based on serum PSA concentration: subgroup A1 (141 cases) and subgroup B1 (108 cases) with a serum PSA concentration of 4-10 ng/ml; subgroup A2 (108 cases) and subgroup B2 (92 cases) with a serum PSA concentration more than 10-20 ng/ml; subgroup A3 (70 cases) and subgroup B3 (74 cases) with a serum PSA concentration more than 20 ng/ml. The patients in the CEUS group underwent targeted biopsy (TB) combined with systematic biopsy (SB), while the patients in the conventional ultrasound group underwent 10-point SB. The t-test was performed to compare the age, the value of PSA concentration, prostate volume, and PSA density of patients between the two group. The χ2 test was performed to compare the detection rate of prostate cancer between different subgroups.

Results

There was no significantly difference between the conventional ultrasound group and the CEUS group in age [(72.38±6.11) years vs (73.26±6.64) years], PSA concentration [(15.98±8.52) ng/ml vs (18.43±9.89) ng/ml], prostate volume [(35.81±17.88) ml vs (34.37±16.56) ml], and PSA density [(0.44±0.37) ng/ml2 vs (0.50±0.43) ng/ml2] (P>0.05). Among the 593 patients included, 287 (287/593, 48.4%) had prostate cancer. The detection rate in the conventional group was 44.8% (143/319), and the detection rate in the CEUS group was 52.6% (144/274). There was no significantly difference in the total detection rate of prostate cancer between the conventional ultrasound group [44.8% (143/319)] and the CEUS group [52.6% (144/274)] (P>0.05). The detection rate of prostate cancer in subgroup A1 [31.9% (45/141)] was significantly lower than that of subgroup B1 [44.4% (48/108] (χ2=4.10, P=0.043), though the detection rate did not differ significantly between subgroup A2 [42.6% (46/108)] and subgroup B2 [47.8% (44/92)] and between subgroup A3 [74.3% (52/70)] and subgroup B3 [70.3% (52/74)] (P>0.05).

Conclusion

For patients with a PSA contentration of 4-10 ng/ml, CEUS-TB combined with SB can improve the detection rate of prostate cancer.

Key words: Prostate cancer, Contrast-enhanced ultrasound, Targeted biopsy, Prostate specific antigen

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