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(A) Clinical course of thyroid hormones during the switch from darbepoetin alpha to roxadustat. (B) Noncontrast head CT shows no abnormal finding. (C) MRI of the head shows no infarction finding in the pituitary grand. (D) MR angiography shows no occlusion of the major cerebral arteries. CT, computed tomography; MRI, magnetic resonance imaging. Normal ranges: TSH: 0.34–3.88 μIU/mL; FT3: 2.1–4.1 ng/dL; FT4: 0.9–1.7 ng/dL.
