embryonal carcinoma
Chapter: 17
Malignant germ cell tumors composed of undifferentiated cells resembling early embryonic cells. The tumor has a peak incidence in the 25-35 year age group. Pure embryonal carcinomas are rare accounting for about 10-15% of all germ cell tumors. Embryonal carcinoma cells can also act as stem cell of teratocarcinomas, histologically pleomorphic tumors composed of developmentally pluripotent stem cells, and their somatic and extraembryonic derivatives.
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