[Dynamic magnetic resonance imaging versus dynamic echography in the staging of Peyronie's disease].

Clinical examination and ultrasonography are often the only evaluation needed for patient with Peyronie's disease. Magnetic resonance angiography (MRA), a new magnetic resonance imaging (MRI), improves tissue contrast between the fibrous plaque and the near structures. A total of 25 patients with Peyronie's disease underwent palpation, ultrasonography and MRI after dynamic improvement with intrapenile 10 micrograms prostaglandin E1. The patients were studied with conventional ultrasonography (US) (7.5 MHz) and with 1.5 T superconductive magnet (two-dimensional Fourier transform gradient-echo time-of-flight, 2DFT-TOF, sequences and conventional T1 and T2 spin echo (SE) sequences). The US evaluation demonstrated the presence of plaques in 18/25 patients (72%). The SE sequences revealed evidence of plaques in 10/25 patients (40%). MR angiograph enabled the correct evaluation of plaques in 23/25 patients (92%), and identified the involvement of the septum intercavernosum, that was not detected on both US and SE images. MRA provides accurate preoperative information fo correct evaluation of plaque extension in IPP.