teratoma not considered a rare kind of tumor, where it is diagnosed nearly 10,000 cases each year, and teratoma region sacrococcygeus is the most common tumors in a birth occurs at a rate of 1 per 20,000 to 40,000 births, and cystic teratoma mature mature cystic teratomas happens 10-20% of all ovarian tumors, which is not only the most ovarian tumors arising from embryonic stem cells, but also the most common ovarian tumors in pre-twenty, and it happens on both sides at 8-15% of cases. And the percentage of all testicular tumors occurring between male 2.1-2.5/100000, and tumors arising from embryonic stem cells represent 95% of Testicular tumors after puberty, and teratogenic tumors offices represent only 3-5% of testicular tumors arising from embryonic stem cells. The incidence of testicular tumors in males before puberty at 0.5-2 per 100,000, and tumorigenesis teratogenicity by 14-27% of these tumors, they take second place between tumors that arise from embryonic cells, while benign tumors teratogenic mediastinal region are rare and represent 8% of the total tumors of this region.
التسميات
teratoma