title: A Hormonally Active Malignant Struma Ovarii.
abstract: Struma ovarii is a rare monodermal variant of ovarian teratoma that contains at least 50% thyroid tissue. Less than 8% of struma ovarii cases present with clinical and biochemical evidence of thyrotoxicosis due to ectopic production of thyroid hormone and only 5% undergo malignant transformation into a papillary thyroid carcinoma. Only isolated cases of hormonally active papillary thyroid carcinoma developing within a struma ovarii have been reported in the literature. We report the case of a 36-year-old woman who presented with clinical signs and symptoms of hyperthyroidism as well as a left adnexal mass, which proved to be a thyroid hormone-producing, malignant struma ovarii.
authors.affiliation: Department of Medicine, ABC Medical Center, Mexico City 01120, Mexico.
authors.forename: Carolina
authors.initials: C
authors.lastname: Lara
authors.affiliation: Department of Medicine, ABC Medical Center, Mexico City 01120, Mexico.
authors.forename: Dalia
authors.identifier: 0000-0001-9961-4667
authors.initials: D
authors.lastname: Cuenca
authors.affiliation: Neurological Center, ABC Medical Center, Mexico City 01120, Mexico.
authors.forename: Latife
authors.initials: L
authors.lastname: Salame
authors.affiliation: Department of Surgical Oncology, Hospital Angeles de Interlomas, Huixquilucan 52763, Mexico.
authors.forename: Rafael
authors.initials: R
authors.lastname: Padilla-Longoria
authors.affiliation: Department of Medicine, ABC Medical Center, Mexico City 01120, Mexico; Neurological Center, ABC Medical Center, Mexico City 01120, Mexico.
authors.forename: Moisés
authors.identifier: 0000-0002-4748-9734
authors.initials: M
authors.lastname: Mercado