Cystic struma ovarii (with macrocystic change)
In this article, a case of cystic struma ovarii with macrocystic change is presented. Cysts derived from struma ovarii may mimic a mucinous or serous cystadenoma. A careful examination for any thyroid microfollicles within fibrous septa or areas of solid stroma is key. In problematic cases, immunohistochemical staining with thyroglobulin and thyroid transcription factor-1 may be required to establish the diagnosis.
Piragua SC, Otis CN, Prefontaine M, Pantanowitz L. Cystic struma ovarii (with macrocystic change) Int J Surg Pathol 2008 Oct;16(4):433-4.