70 year old female with SNT shows increased RAI, Serum T3 and T4 are elevated. Most probable diagnosis is:

Ans. (d) Toxic multinodular goiterRef: Page 1531 Schwartz 10th edition Increased RAIU is seen in:* Graves' disease (Diffuse Toxic Goiter)* Toxic Multinodular goiter* Toxic adenoma* Drug induced - Amiodarone, Iodides* Cancer thyroid* Struma Ovarii* Hydatiform mole* TSH secreting Pituitary adenoma