Struma ovarii

This episode of Endocrine Deep Dives reviews struma ovarii, a rare ovarian teratoma dominated by functional thyroid tissue. We examine how this ectopic tissue causes thyrotoxicosis with low cervical radioiodine uptake, mimicking thyroiditis or factitious ingestion. The discussion highlights diagnostic strategies using pelvic imaging and whole-body radioiodine scans. Finally, we explore risk-stratified management, addressing when to pursue conservative ovarian resection versus total thyroidectomy, radioactive iodine therapy, and long-term thyroglobulin surveillance.