Figure 4From: Concurrent development of testicular seminoma and choriocarcinoma of the superior mediastinum, presented as cervical mass: a case report and implications about pathogenesis of germ-cell tumoursA. Testicular seminoma: Uniform tumor cells with abundant clear cytoplasm and centrally located nucleus. Tumor nests are outlined by fibrous bands infiltrated by lymphocytes. (medium power magnification). 4B: Rare cells stain positive for β-hCG (high power magnification).Back to article page