Abstract
Background: Papillary thyroid cancer (PTC) accounts for 90% of the thyroid malignancies with predominance in females. Distant metastasis is usually seen in lungs and bones. The treatment of metastatic papillary cancer thyroid is total/near total thyroidectomy followed by radioactive iodine (RAI) ablation. Lung metastasis shows good response to RAI therapy. Case Presentation: We describe a case of 22-year-old female, referred to nuclear medicine department after surgery for RAI ablation. Patient was diagnosed case of PTC. First dose of 100 mCi of RAI under steroid cover was given. Post-therapy scan showed bilateral pulmonary metastasis. However, follow up I-131 whole body imaging after 2 years showed no evidence of functioning thyroid tissue/metastasis. Conclusion: PTC with lung metastasis has good prognosis and better survival in young patients treated with RAI. A single dose of RAI (I-131) may cure extensive lung metastasis.
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