Papillary thyroid cancer located in malignant struma ovarii with omentum metastasis: a case report and review of the literature

摘要

BackgroundThe present of malignant transformation in struma ovarii is exceedingly rare. Malignant struma ovarii is usually asymptomatic and infrequently diagnosed preoperatively. Because of its rarity, there is no consensus about diagnosis and management in the literature.