Objective: To evaluate the clinical value of transrectal ultrasound (TRUS) examination of the prostate in the diagnosis of prostate cancer (PCA).
Methods: The sonographic and clinical data of 100 patients with PCA were analyzed retrospectively.
Results: There was single lesion in 59 patients, diffuse lesion in 17 patients. The size of tumor in 35 patients was < or = 1.5 cm. TRUS in the diagnosis of PCA had an accuracy of 76.0%, specificity of 89.4%, false positive rate of 10.6% and negative predictive value of 88.9%. The level of prostate specific antigen (PSA) increased with the increase in the size of the tumor (P < 0.05). The PSA level of patients with poorly differentiated PCA was significantly higher than that in patients with well differentiated PCA.
Conclusion: TRUS examination is a convenient procedure for the diagnosis of PCA in its early stage.