Ovarian teratomas belong to a type of ovarian germ cell tumor. Ovarian teratomas can be classified into mature teratomas, also known as dermoid cysts, which are a type of benign tumor. There are also immature teratomas, which are malignant tumors commonly found in younger patients, typically between the ages of 11 and 19. If an ovarian teratoma is found to be over three centimeters in diameter, further examinations such as a CA125 test and pelvic CT scan are needed. In the absence of other complications, elective surgical treatment can be planned. However, if the examination reveals high CA125 levels and the pelvic CT confirms the diagnosis, and the cyst is growing rapidly with high blood lipids, timely surgical treatment is necessary, followed by a rapid pathological examination during the surgery.