Science and Education Publishing American Journal of Medical Case Reports 2374-216X 3 4 2015 03 16 A 72-year-old Patient with Dermoid Cyst 105 107 EN Esin KASAP Department of Obstetrics and Gynecology, Sifa University School of Medicine, ?zmir, Turkey Mine GENC Neslin SAH?N Esra Bahar GUR Oya Nermin SIVRIKOZ AJMCR2015345 10.12691/ajmcr-3-4-5 2015 03 02 2015 03 10 2015 03 16 Introduction: It has been reported that the risk of malignant transformation is doubled in patients with mature cystic teratoma aged over 50 years. It is rare to encounter benign forms of mature cystic teratoma in elderly women. We aimed to report a 72-year-old woman with a benign cystic teratoma. A 72-year-old woman detected by ultrasonography to have a pelvic mass with a size of 14x12x10 cm was admitted to our department for detailed investigations. A mature cystic teratoma was diagnosed on the basis of transvaginal ultrasonography, magnetic resonance imaging, and serum concentrations of tumor markers. Postoperative pathology examination confirmed the diagnosis. This report once again showed that although mature cystic teratoma is rare in elderly women, it still occurs.