Teratoma is a kind of ovarian germ cell tumor whose etiology is not clear. It is currently speculated that it may be related to factors such as abnormal differentiation of embryonic germ cells.
Teratoma is a more common type of ovarian germ cell tumors, mainly derived from germ cells, and can be divided into mature teratomas (ie benign teratomas) and immature teratomas (ie malignant teratomas). ) Two types.
Teratoma contains human in vitro embryonic leaf, mesodermal leaf and endodermal leaf tissue components, so there will be hair, oil, skin, teeth, bone fragments and other ectodermal tissues in teratoma, and there may also be Mesodermal or endodermal tissue, such as muscle, gastrointestinal, etc.
Most mature teratomas come from a single germ cell that fails the second maturation division, or from the endonuclear replication of a mature egg. Some immature teratomas can also occur from the fusion of two eggs. There are few abnormal karyotypes, and abnormal karyotypes are common in higher grade immature teratomas. Teratomas are prone to occur in young women in their 20s and 30s. They will gradually grow up with the age of the patient. In terms of location, the ovary is the most common location.
Once the diagnosis of mature ovarian teratoma is established, surgical treatment is usually required. If the tumor is larger than 5 cm, it must be operated immediately. If the volume is small, it can be observed regularly and elective surgery.