RESUMEN
@#Papillary thyroid carcinoma is the most common histological subtyoe if thyroid carcinoma. Management is surgical with post-operative radioodine therapy to ablate thyroid tissue remnants. Although the mangement of uncomplicated papillary thyroid carcinoma is well established,treatment of patients also affected with Moyamoya disease is limitedly describe. Theare are concerns with regards to doing radioactive iodine therapy, which might affect the seased arteries in Moyamoya disease. We report a case of a 36-year-old male with Moyamoya disease, who was subsequently diagnosed to have papillary thyroid carcinoma. After total thyroidectory, the patient underwent radioactive iodine therapy with 5.7 GBq (155.0 mCi). Post-oblation scan with SPECT of the pelvis-showed functional thyroid tissue remnants in the lower anterior neck with suspicious tracer-avid focus in the sacrum. There were no complications such as radiation-induced arteritis encountered with the patient's MOyamoya disease during post-operative high-dose radiooidine ablation and no subjective complaints even on follow-up after almost one year.