Ectopic Thyroid Tissue in the Uterus Identified by Iodine-131 SPECT/CT

A 45-year-old woman underwent a total thyroidectomy and was subsequently treated with 1110 MBq of radioactive iodine-131 ablation therapy for papillary thyroid cancer. A post-therapy iodine-131 whole-body scan revealed a focal uptake in the mid-pelvic area. To identify the exact anatomical location, SPECT/CT images were taken. The SPECT/CT fusion images revealed that the uptake was in the uterus, which was considered as radioactive iodine-avid ectopic thyroid tissue in the uterus.

Publication History

Received: 15 June 2023

Accepted: 07 July 2023

Article published online:
06 October 2023

• References

• 1 Noussios G, Anagnostis P, Goulis DG. et al. Ectopic thyroid tissue: anatomical, clinical, and surgical implications of a rare entity. Eur J Endocrinol 2011; 165 (03) 375-382
• 2 Ibrahim NA, Fadeyibi IO. Ectopic thyroid: etiology, pathology and management. Hormones (Athens) 2011; 10 (04) 261-269
• 3 Zhang W, Zhang H, Hou Q. et al. Ectopic thyroid microfollicular adenoma in the lung: A case report. Medicine (Baltimore) 2019; 98 (35) e16832
• 4 Di Stefano C, Guarnotta V, Barbaccia M. et al. Hepatic incidentaloma: An asymptomatic ectopic thyroid tissue. Front Endocrinol (Lausanne) 2022; 13: 1066188
• 5 Ma A, Liu H. Ectopic thyroid of the pancreas: A case report and literature review. Medicine (Baltimore) 2017; 96 (47) e8707
• 6 Yilmaz F, Uzunlar AK, Sogutcu N. Ectopic thyroid tissue in the uterus. Acta Obstet Gynecol Scand 2005; 84 (02) 201-202