[Role of 3D-ultrasonography in the assessment of transitional zone PSA].

Objective: Valute 3 TRUS to study the transitional zone of the prostate to calculate the PSA density Tz in patient with first negative biopsy, PSA Tot > 4 ng/ml and clinical suspicion of cancer.

Methods: During a 12 months period we performed 429 biopsies. All patients had PSA = 4-10 ng/ml and/or suspected DRE.