From your description and analysis, considering the possibility of ovarian teratoma, we can further confirm the possibility of malignancy. Laparoscopic surgery is feasible, and regular postoperative review is enough.

(Dr. Ding from Guangdong Maternal and Child Health Hospital solemnly reminds me that because I can't see the patient face to face, I can't fully understand the condition. The above suggestions are for reference only. Please go to the hospital for specific diagnosis and treatment under the guidance of a doctor! )