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Transrectal sonography of benign and malignant prostatic lesions
AJR. American Journal of Roentgenology
|June 1, 1986
Summary
Transrectal prostate sonography can detect textural changes in benign and malignant lesions. However, overlapping appearances mean all suspicious prostate lesions require biopsy for accurate cancer diagnosis.
Area of Science:
- Urology
- Radiology
- Oncology
Background:
- Prostate cancer is a leading cause of mortality in men.
- Early detection of prostate cancer improves patient outcomes.
- Transrectal ultrasound is a common imaging modality for prostate evaluation.
Purpose of the Study:
- To evaluate the effectiveness of linear-array transrectal ultrasound in differentiating benign and malignant prostate lesions.
- To identify sonographic features predictive of malignancy.
Main Methods:
- Retrospective analysis of transrectal ultrasound images from 43 patients with malignant lesions and 74 patients with benign lesions.
- Assessment of lesion echogenicity, texture, and location.
Main Results:
- Prostate sonography demonstrated sensitivity to textural changes in both benign and malignant lesions.
- Significant overlap in sonographic appearances between benign and malignant lesions was observed.
- Hyperechoic areas were noted in 58% of carcinomas; 19% were purely hypoechoic.
- Posterior or posterolateral hypoechoic foci were associated with a high incidence of cancer.
Conclusions:
- Transrectal ultrasound can detect textural changes but lacks definitive features to reliably predict prostate cancer.
- Biopsy remains essential for all palpable prostate lesions suspicious for malignancy.