Struma ovarii is a
Struma is a river in europe,along its banks endemic goitre was noted. Strauma is loosely used for goitre in europe. A Struma ovarii benign ovarian tumor is a form of teratoma that contains mostly thyroid tissue, which may develop thyrotoxicosis. Source : Bailey and love 26th edition Pg : 748
Metastatic tumor
Teratoma
Sex cord tumor
Surface epithelial tumor
Endocrinology and breast