A teratoma is actually a type of tumor with tissue or organ components resembling normal derivatives of all three germ layers. Teratomas have been reported to contain hair, teeth, bone and sometimes even more complex organs such as eyeball, torso, and hands. Usually a teratoma will contain no organs but rather one or more tissues normally found in organs such as the brain, liver, and lung.

Teratomas can be either malignant or benign. They normally are well encapsulated and non-invasive of surrounding tissues, hence they are relatively easy to extract from surrounding tissues. For malignant teratomas, surgery typically is followed by chemotherapy.

Anyway, I hope everything goes well for you thc!