An endodermal sinus tumor (yolk sac tumor) of the testis is shown composed of primitive germ cells that form glomeruloid or embryonal-like structures.

 
  • 睾丸的内胚层窦肿瘤(卵黄囊肿瘤)由原始生殖细胞构成,这些细胞形成血管球或胚芽样结构。
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