Primary testicular neuroendocrine tumor with liver lymph node metastasis: A case report and review of the literature

Figure 1 Plain and enhanced computed tomography images of the middle and lower abdomen. A: Computed tomography (CT)-enhanced images of abnormal nodules in the liver (arrow); B: CT plain scan images of abnormal nodules in the liver (arrow); C: CT plain scan image of the right testicular tumor (arrow); D: CT-enhanced image of the right testicular tumor (arrow).

Figure 2 Upper abdomen + testis magnetic resonance imaging (plain + enhanced) images. A: Magnetic resonance imaging (MRI) delayed phase images of abnormal nodules in the liver (arrow); B: MRI venous phase images of abnormal nodules in the liver (arrow); C: Frontal image of MRI scan of the right testicular tumor (arrow); D: Right testicular tumor MRI scan side view image (arrow).

Figure 3 Postoperative pathology and immunohistochemistry. A: The resected specimen consisted of the right testis, tumor, spermatic cord, and epididymis; B and C: Histological HE staining of primary neuroendocrine tumors of the testis; D: Tumor cells positive for CgA; E: Tumor cells positive for CD56; F: Syn-positive tumor cells; G and H: Tumor cells CD34 negative.