Table 1: Comparison of the patient’s findings before and after treatment with radioiodine.

Before treatment After treatment

Serum TSH<0.01 μIU/mL 0.6 μIU/mL
Serum T4 40.6 μg/dL12.0 μg/dL
Pulmonary artery systolic pressure70 mm of Hg45 mm of Hg