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T(2)-weighted combined with diffusion-weighted images for evaluating prostatic transition zone tumors at 3 Tesla.

AIM
We hypothesize that the combination of T(2)-weighted (T(2)W) MRI with diffusion-weighted imaging (DWI) methods provides a powerful clinical application for the differential diagnosis of prostate cancer and benign lesion in the prostatic transition zone (TZ).


METHODS
This retrospective study included 113 patients who were diagnosed with TZ lesions by MRI. The apparent diffusion coefficient values were compared between biopsy-proven benign and malignant lesions.


RESULTS
The apparent diffusion coefficient values for the malignant nodules were significantly lower than those of the benign nodules. The area under the curve values for T(2)W imaging combined with DWI and T(2)W imaging alone were 0.991 and 0.884, respectively.


CONCLUSION
T(2)W combined with DWI provides a powerful tool for noninvasive differentiation between malignant and benign prostatic hyperplasia nodules in the prostatic TZ.