Data
Clinical presentation: A 40-year-old man was referred for evaluation of an enlarged goiter discovered by the patient himself.
Palpation: The left lobe was enlarged and nodular.
Laboratory test: TSH 0.01 mIU/l, FT4 29.4 pM/L, FT3 6.94 pM/L.
Cytology was performed from the hypoechoic nodule in the left lobe. FNA resulted in benign lesion.
Diagnosis. Hyperthyroidism caused by multinodular goiter.
Suggestion: daily 20 mg methimazole. Check TSH and FT4 in every 4 weeks until FT4 becomes normal, then total thyroidectomy.