IMR Press / EJGO / Volume 37 / Issue 3 / DOI: 10.12892/ejgo2809.2016
Open Access Case Report
A rare case of microinvasive squamous cell carcinoma arising in mature cystic teratoma of the ovary
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1 Department of Obstetrics and Gynecology, Faculty of Medicine, Kagoshima University, Kagoshima, Japan
Eur. J. Gynaecol. Oncol. 2016 , 37(3), 420–422; https://doi.org/10.12892/ejgo2809.2016
Published: 10 June 2016
Abstract

Malignant transformation of a mature cystic teratoma (MCT) of the ovary is rare, with squamous cell carcinoma (SCC) being the most common type. The authors report a novel case of microinvasive squamous cell carcinoma arising in a mature cystic teratoma of the ovary. A 56-year-old woman presented with a 12-cm mass, which was diagnosed as a left ovarian mature cystic teratoma preoperatively by ultrasonography. Subsequently, laparoscopic surgery for the ovarian tumor was performed. The pathologic diagnosis was microinvasive squamous cell carcinoma arising in a mature cystic teratoma of the ovary. Appropriate staging surgery was then performed, with no evidence of malignant tissue except for the removed left ovary. Microinvasive SCC arising in MCT of the ovary is extremely rare, and, to the best of the authors' knowledge, this has not previously been reported in the literature.
Keywords
Malignant transformation
Mature cystic teratoma
Microinvasive squamous cell carcinoma
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