Papillary Carcinoma in Mature Teratoma of Struma Ovarii.

A 62-year-old woman had the incidental finding of malignant struma ovarii following surgery for primary endometrial carcinoma. The patient had vaginal bleeding for one year. After gynecological examination, she was referred for fractional curettage which revealed endometrial cancer. The patient underwent total hysterectomy and bilateral adnexectomy. Histological findings of uterus confirm the presence of endometrial cancer. The left ovary showed the presence of mature teratoma with dominant thyroid tissue and focus of papillary carcinoma. Postoperatively she underwent radiation therapy and 3 months later total thyroidectomy. The stimulated thyroglobulin level was detectable. She was referred for radioiodine ablation with a dose of 3,7GBq 131-J. Post therapy scintigraphy shows pathological uptake of 131-J only in the neck. The patient continued treatment of endometrial cancer (external beam therapy). She is currently on suppressive hormone L-thyroxin therapy. Two months later hormonal status, thyroglobulin and antithyroglobulin antibodies showed optimal range.