Successful in vitro fertilization pregnancy and delivery after a fertility-sparing laparoscopic operation in a patient with a papillary thyroid carcinoma arising from a mature cystic teratoma

Malignant transformation of ovarian mature cystic teratomas is rare, and papillary thyroid cancer occurs in 0.1%–0.3% of ovarian teratomas that undergo malignant transformation. We describe a case of successful in vitro fertilization pregnancy and delivery after a fertility-sparing laparoscopic operation in a patient with papillary thyroid carcinoma arising from a mature cystic teratoma.