Papillary thyroid carcinoma after radioactive iodine treatment for toxic thyroid nodule: Case report

Abstract

Radioactive iodine (RAI) treatment is recommended as the first choice for toxic thyroid nodules by American Thyroid Association (ATA). Here, we present our second case of papillary thyroid carcinoma after RAI therapy. A fifty fiveyear-old woman received RAI therapy for toxic thyroid nodule in the right lobe in 2005. Pre-treatment fine needle aspiration biopsy (FNAB) revealed benign cytology. She was euthyroid after the therapy. However, 8 years after the treatment she had 15 mm thyroid nodule in the same location. This time, FNAB result was suspected for papillary thyroid carcinoma. The patient underwent bilateral total thyroidectomy and the histopathological evaluation revealed papillary thyroid carcinoma in the nodule. This is the second case with papillary carcinoma after RAI therapy. Papillary carcinoma developed after the RAI therapy. In conclusion, all cases should be closely followed up after RAI therapy for carcinoma development.

Keywords

• Papillary cancer,Toxic thyroid nodule,Radioactive iodine

Toksik tiroit nodülü için radyoaktif iyot tedavisinden sonra gelişen tiroit papiller karsinomu: Olgu sunumu

Abstract

Amerikan Tiroit Derneği (ATA) toksik tiroit nodüllerinde ince iğne aspirasyon biyopsisi (İİAB) yapılmaksızın radyoaktif iyot (RAI) tedavisi önermektedir. Elli beş yaşında kadın hasta 2005 yılında tespit edilen tiroit sağ lobunda yerleşimli toksik nodül nedeniyle RAI tedavisi almış. Hastanın RAI öncesi yapılan İİAB sonucu benign tiroit nodülü olarak rapor edilmiş. Hastanın 8 yıl sonra yapılan kontrol ultrasonografisinde tiroit sağ lobda yerleşimli 15 mm çaplı solid nodül saptandı. Hastaya yapılan İİAB sonucu papiller karsinom açısından şüpheli olarak rapor edildi. Hastaya bilateral total tiroidektomi yapıldı. Histopatolojik incelemede nodülde papiller tiroit karsinomu tespit edildi. Bu vaka RAI sonrası karşılaştığımız ikinci papiller karsinom vakasıdır. Bu yazıda sunduğumuz olgu, RAI öncesi hastanın karsinomunun olmadığı ve kanser gelişiminin RAI tedavisi sonrası olduğu İİAB ile gösterilmiştir. Sonuç olarak, RAI tedavisi alan hastalar uzun dönemde karsinom gelişimi açısından yakın takip edilmelidir.

Keywords

• Papiller Kanser,Toksik tiroid nodülü,Radyoaktif iyot

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