Struma ovarii quístico: reporte de caso y revisión de la literatura

Struma ovarii is a rather unusual tumor, found in 2.7% of ovarian terato-mas. Its cystic variety is quite rare, with its differential diagnosis being an ovarian cystadenoma. It is characterized by the presence of a solid area with thyroid fol-licles with colloid inside, and a cystic area lined by a flat to cuboidal epithelium, both with TTF1 marking. We describe the case report of a patient referred to our hospital for presenting a mass on vaginal examination. Imaging studies revealed the presence of a right adnexal cystic mass, for which she underwent a radical hys-terectomy with bilateral salpingo-oophorectomy. After pathology and immunohis-tochemistry studies, it was concluded that it corresponded to a cystic struma ovarii.