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Korean Journal of Obstetrics & Gynecology 2007;50(11):1552-1557.
Published online November 1, 2007.
Papillary carcinoma arising in a struma ovarii of the complex teratoma.
Ran Hong, Sung Chul Lim, Chang Hun Song, Keun Hong Kee, Mi Ja Lee
1Department of Pathology, College of Medicine, Chosun University, Gwangju, Korea. sclim@chosun.ac.kr
2Department of Obstetrics and Gynecology, College of Medicine, Chosun University, Gwangju, Korea.
Abstract
Benign or malignant tumors that arise in a benign cystic teratoma are rare. Malignant transformation in mature cystic teratoma of ovary is reported to occur in 1~3%. Several types of malignancy can occur from any of three germ-cell layers, but the most common malignancy is a squamous cell carcinoma derived from ectoderm. We experienced a papillary carcinoma arising in a struma ovarii of the complex teratoma. 74-year-old female presented with an abdominal discomfort. A pelvic ultrasonograph and computed tomography detected a 7 x 6 cm-sized and well-circumscribed cystic mass at the anterior to the uterus. The inner part of the mass was filled with cystic fluid showing low-density, however, solid portion including fat and soft tissue accompanied by calcification was identified in more than half of the entire tumor volume. The patient underwent a bilateral salpingo-oophorectomy. On histopathologic examination, the lesion was consistent with papillary carcinoma with squamoid features arising in a struma ovarii of the mature cystic teratoma. We herein report a case of the very rare papillary carcinoma arising in a struma ovarii of the complex teratoma and review the available literature.
Key Words: Ovary, Teratoma, Papillary carcinoma, Struma ovarii


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