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1:
Mixed Germ Cell Tumor : Gross
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Comments: Mixed germ cell tumors have a variegated gross appearance due to admixture of different germ cell tumor elements. This tumor was composed of embryonal carcinoma and mature teratoma. The pearly white areas seen grossly corresponded to hyaline cartilage.
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2:
Mixed Germ Cell Tumor : Gross
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Comments: This mixed germ cell tumor was composed of seminoma (salmon-colored areas on either side of the bivalved specimen) and immature teratoma consisting of primitive neuroepithelium and blastema (soft pink-white area in the center of the image resembling brain tissue).
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3:
Mixed Germ Cell Tumor : Teratoma
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Comments: This mixed germ cell tumor had areas of mature teratoma and embryonal carcinoma. The photomicrograph shows hyaline cartilage. Intestinal type glands were also present nearby.
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5:
Mixed Germ Cell Tumor
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Comments: This is a left orchiectomy specimen from a 30 year old male who presented with a 6 month history of painless enlargement of left testicle. Testicular ultrasound revealed a solid mass with increased vascularity suspicious for a neoplasm. It was a mixed germ cell tumor consisting of embryonal carcinoma and yolk sac tumor components.
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6:
Mixed Germ Cell Tumor : Polyembryoma pattern
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Comments: Polyembryoma is a distinct pattern of mixed germ cell tumor that attempts to recapitulate embryonic architecture. In this image, three embryoid bodies are seen. Each is composed of a central portion of embryonal carcinoma between a ventral yolk sac tumor component and a dorsal amnion-like space.
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