Spermatocytic tumor: A rare case report

Figure 1 Ultrasound (left) and computed tomographic scans (right) of the testicles. A: Increased volume of the right testicle, with a lesion of uneven parenchymal echo (white arrow); B: Uniform nodular change in the right testicle (white arrow).

Figure 2 Histopathology findings. A and C: Neoplastic testicular tissue with stromal edema (hollow pentagram) that produces pseudo-adenomatous change; three sizes of tumor cells were identified: Large (red arrow), small (black arrow), and medium-sized cells (blue arrow); B: Tumor cells form diffuse sheets and nests; D: Mucinous degeneration occurs in some areas (solid pentagram). Hematoxylin & eosin staining. Magnification: 100 × (A); 40 × (B and D); 400 × (C).

Figure 3 Immunohistochemistry staining. A: Positive staining of tumor cell membranes for CD117 (100 ×); B: No nuclear staining for PLAP (100 ×).