Teratomas are one of the most common ovarian tumors in women and are generally benign and not severe. If a teratoma is discovered, regular examinations are necessary. These examinations should assess the endocrine status, as some teratomas have endocrine functions, and also consider the growth rate and specific size of the teratoma. Based on the examination results, it will be decided whether regular follow-up examinations are sufficient or if immediate surgical treatment is needed. Therefore, examinations are very important.