Papillary thyroid carcinoma in an adult teratoma in combination with mucinous cystadenoma of the ovary

Background: Primary thyroid carcinoma in an adult teratoma of ovarian origi n is observed very rarely. Material and Methods: We report a patient with a papillary thyroid carcinoma in adult teratoma and discuss the available li terature of clinical and histopathological findings of these tumors. Result and Conclusion: Patients with papillary thyroid carcinoma in an adult tera toma of the ovary have a better prognosis than patients with thyroid carcin oma and metastatic spread to the ovary. Therapy of choice is surgery. The a vailable literature describes several cases of patients with a benign clini cal course without any further systemic therapy even in advanced stages of the disease (intra-abdominal metastasis).