We present the case of a 53-year-old woman after thyroidectomy with metastatic multifocal papillary carcinoma and encapsulated focal Hurthle cell carcinoma. Postoperatively, an I-131 whole-body scan revealed uptake in the low midline anterior neck. She was treated with 151.5 mCi of I-131. The 1-year follow-up I-131 whole-body scan revealed a new pelvic mass with I-131 uptake. Pelvic CT showed bilateral complex ovarian masses. She underwent surgical excision, revealing a right ovarian endometriotic cyst and a left ovarian cystadenofibroma, without thyroid tissue involvement. I-131 uptake in a cystadenofibroma is extremely rare and has been reported only once to our knowledge.
From the Department of Radiology, Division of Nuclear Medicine, Winthrop-University Hospital, Mineola, NY.
Received for publication, March 17, 2011; accepted, April 10, 2011.
Conflicts of interest and sources of funding: none declared.
Reprints: Jonathan Flug, MD, MBA, Department of Radiology, Division of Nuclear Medicine, Winthrop-University Hospital, 259 First St, Mineola, NY 11501. E-mail: firstname.lastname@example.org.