The following is a thyroid scan. The most probable diagnosis can be:: (A) Papillary carcinoma thyroid, (B) Lateral aberrant thyroid, (C) Hypersecreting adenoma, (D) Graves disease
Answer is C. The given thyroid scan is showing increased focal uptake in the Rt upper lobe of thyroid & decreased uptake in the rest of the thyroid gland, this is suggestive of hypersecreting thyroid adenoma. There is no ectopic thyroid tissue, so lateral aberrant thyroid & lateral extension is ruled out. Malignancy ruled out as there is no cold nodule.