Abstract
We experienced the giant seminoma with 18×10×10cm sized and about 2.6kg weight of 25year old patient. We intensively examined the histological tissue type distributions in this giant seminoma. Most of the tumor consisted of seminoma components. In addition, the tumor included the very small fragments of yolk sac tumor and embryonal carcinoma component at the root part of the seminoma mass. This shows that intensive histological examination may contribute to the finding of other embryonic component of the large seminoma. This may show that leaving the seminoma growing may generate the other embryonic tumor component, not always big enough to find out in a routine procedure, during the growth, in the different way from the original mixed cell germ tumor.
Published Version
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