Mature cystic teratomas also known as dermoid cysts constitute 20% of all ovarian neoplasms occurring in the reproductive years. Bilateral mature cystic teratomas account for 10-15% of all bilateral ovarian tumours. Complications which can occur in these benign mature teratomas are torsion and malignant transformation. Here, we report a case of bilateral ovarian mature cystic teratoma with malignant transformation to Squamous Cell Carcinoma (SCC) in a 45-year-old pre-menopausal woman.
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