Figure 4. Histopathological examination of the mass revealed thyroid tissue in contact with the ovarian parenchyma (black arrowe)(a,b).The tumor is formed of variable sized thyroid follicles , lined by flattened cuboidal epithelium and distended with colloid(yellow arrow)(c,d)

From

Struma Ovarii, A Rare Ovarian Tumor: Case Report

Walid Mohamed Elnagar, Mai Mohammed Abdelwahab, Mohamed El-Bakry Lashin

American Journal of Medical Case Reports. 2019, 7(2), 18-21 doi:10.12691/ajmcr-7-2-1