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

Figure 4 A 72-year-old male patient presented with one month of dysuria. A: Prostate enlarged to 4.0 cm × 5.1 cm × 4.2 cm with incomplete envelope, irregular shape and heterogeneous echo texture; B: A pre-enhanced computed tomography (CT) scan image of the pelvis showed a marked enlarged prostatic tumor invading to bladder, seminal vesicle; C: The enlarged prostate was inhomogeneous moderately enhancement in arterial phase; D: Coronal oblique multiplanar reconstruction of enhanced CT scan shows the enhanced inhomogeneous prostate with high attenuation protruding into bladder and unclear with surrounding tissue.