Clinical Focus ›› 2024, Vol. 39 ›› Issue (7): 635-639.doi: 10.3969/j.issn.1004-583X.2024.07.009

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Value of transrectal ultrasound combined with contrast-enhanced ultrasound in the diagnosis of benign and malignant prostate hypoechoic lesions

Hao Yuanyuan(), Wang Jun, Huang Qian   

  1. Department of Ultrasound Diagnosis,the First Affiliated Hospital of Nanyang Medical College, Nanyang 473058,China
  • Received:2024-06-03 Online:2024-07-20 Published:2024-08-02
  • Contact: Hao Yuanyuan E-mail:13803774402@163.com

Abstract:

Objective To explore the value of transrectal ultrasound (TRUS) combined with contrast-enhanced ultrasound (CEUS) in the diagnosis of benign and malignant prostate hypoechoic lesions. Methods A total of 54 suspected prostate cancer patients (75 hypoechoic lesions of the prostate) from September 2022 to August 2023 who were admitted in our hospital were selected. All patients underwent TRUS and CEUS. With the pathological examination results as the gold standard, the capacity of TRUS combined with CEUS in distinguishing benign from malignant prostate lesions was evaluated. Univariate and multivariate logistic regression analyses were performed to clarify the value of TRUS combined with CEUS in diagnosing benign and malignant prostate hypoechoic lesions. Results Among 75 prostate hypoechoic lesions, 39 malignant lesions and 36 benign lesions were detected through pathological examination. The proportion of lesions with incomplete capsule, calcification within the lesion, irregular lesion morphology, and enhanced contrast peak value was significantly higher in malignant lesions than those of benign lesions. There were significant differences in sonographic characteristics and contrast patterns between the benign and malignant lesions (P<0.05). Multivariate logistic regression analysis showed that the lesion with an incomplete capsule (OR=10.592), stain-like hypoechoic lesions (OR=13.325), fast-in and fast-out (OR=12.960), and high peak contrast enhancement (OR=16.025) were independent risk factors for malignant prostate hypoechoic lesions (P<0.05). The receiver operating characteristic (ROC) curve showed that the area under curve (AUC) of TRUS, CEUS, and their combination for diagnosing benign and malignant prostate hypoechoic lesions was 0.889, 0.837, and 0.953, respectively. The AUC of TRUS combined with CEUS was higher than that of a single examination. Conclusion TRUS combined with CEUS for the diagnosis of benign and malignant prostate hypoechoic lesions has a high diagnostic value. Ultrasound features, such as lesion capsule, ultrasound features, contrast mode, and contrast peak intensity should be concerned.

Key words: prostatic diseases, ultrasonography, contrast-enhanced ultrasound, low echo lesions, diagnostic value

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