Teratoma pain is often caused by torsion of the teratoma, which is prone to twisting, especially after vigorous exercise or sexual intercourse. Teratoma torsion typically presents as lower abdominal pain, and physical examination of the teratoma site will show significant tenderness, and even rebound pain. In such cases, emergency surgery is generally required to perform a teratoma excision. If the torsion is too severe and there is obvious ovarian necrosis, a unilateral adnexectomy must be performed, and the ovary cannot be preserved. However, this is relatively rare, and in most cases of teratoma torsion, the ovary can be preserved.