Monodermal teratoma

Teratomas are the most common ovarian neoplasm in women under 45 years of age, and account for up to 70% of tumors in females less than 19 years of age [67]. Ovarian teratomas derive from germ cells and are classified into three main categories, among vdiich the mature cystic teratomas account for 99%. Less common types of mature teratomas are the monodermal teratomas, which include the struma ovarii and carcinoid tumors. It is typical for monodermal teratomas not to be cystic but contain... 

Monodermal teratomas are composed predominantly or solely of one tissue type. They include struma ovarii, ovarian carcinoid tumors, and tumors with neural differentiation. 

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