A Case of Papillary Carcinoma of Thyroid Gland Arising from Ovarian Mature Cystic Teratoma

Malignant transformation is a rare complication in a mature cystic teratoma of the ovary, usually being reported less than 2% of cases. The most common malignant tumor arising from a mature cystic teratoma of the ovary is a squamous cell carcinoma. However, adenocarcinoma is reported extremely rare, in most cases it was impossible to tell the source of the malignancy. We experienced a case of papillary carcinoma of thyroid glands arising from mature cystic teratoma of the ovary and report this case with a brief review of literature.