Diagnosis of prostatic neuroendocrine carcinoma: Two cases report and literature review.

Two cases of prostatic neuroendocrine carcinoma (PNEC) imaged by computed tomography (CT) and magnetic resonance imaging (MRI), and literature review are presented. Early enhanced CT, MRI, especially diffusion-weighted image were emphasized, the complementary roles of ultrasound, CT, MRI, clinical and laboratory characteristic's features in achieving accurate diagnosis were valued in the preoperative diagnosis of PNEC.