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Background.Mature cystic teratoma of the ovary(MCTO)is the most common ovarian germ cell n eoplasm and is usually diagnosed in early adulthood.Malignant transfor-mation is rare,occurring in approximately 2%of all cases.Though malignant transformation ca n occur from any of the embryonic germ layers,the most comm on malignancy arising in these otherwise benign tu mors is squamous cell carcinoma.Case.We present a patien t with aMCTO where malignant transformation of gastro intestinal epithelium re-sulted in moderately differentiate d adenocarcinoma.After 3years of follow-up,she remains free of disease.Conclu-sion.Although gastrointestinal ep ithelium is often found in MCTOs,adenocarcinoma arising from this cell type is un-common.This is the third reported ca se of adenocarcinoma arising in gastrointestinal epithelium of a MCTO.
Background. Characterization of cystic teratoma of the ovary (MCTO) is the most common ovarian germ cell n eoplasm and is usually usually diagnosed in early adulthood. Malignant transfor-mation is rare, occurring in approximately 2% of all cases. from any of the embryonic germ layers, the most comm on malignancy arising in these otherwise benign tu mors is squamous cell carcinoma. Case. We present a patien t with a MCTO where malignant transformation of gastro intestinal epithelium re-sulted in moderately differentiate d adenocarcinoma. After 3years of follow-up, she remains free of disease. Confl-sion.Although gastrointestinal epithelium is often found in MCTOs, adenocarcinoma arising from this cell type is un-common. This is the third reported ca se of adenocarcinoma arising in gastrointestinal epithelium of a MCTO.