Decreased Radio iodine uptake is/are seen in -: (A) Toxic multinodular goiter, (B) Grave's disease, (C) Subacute thyroiditis, (D) Autonomous nodular goitre
Answer is C. Answer is option 3- subacute thyroiditis High RAIU is seen in :- graves disease, toxic nodule, autonomous nodular goitre, metastatic follicular thyroid carcinoma, hcg dependent hypehyroidism of trophoblastic disease. Low RAIU is seen in :- subacute thyroiditis, lymphocytic thyroiditis, postpaum thyroiditis, exogenous hypehyroidism. Ref - Harrisons internal medicine 20e topic thyroid from p2692