Possible Iodine-Induced Thyrotoxicosis in a Previously Healthy Adolescent following Administration of Iodinated Contrast Media

Table 1

Thyroid function tests.

	12/28/17+	2/23/20 PCD 4	2/24/20 PCD 5	2/27/20 PCD 8	2/28/20 PCD 9	2/29/20 PCD 10	3/1/20 PCD11	3/6/20 PCD16	3/11/20 PCD 21
TSH (uIU/ml) 0.6–4.8	1.165	<0.0008	<0.0008	0.0009	0.008	0.009	0.008	0.011	0.822
Free T4 (ng/dL) 0.9–1.8 (ng/dL)	1.0	4.1	5.1	6.8	7.4	7.0	5.2	2.4	1.3
Total T4 (ug/dL) 4.5–10.9		15.0	16.5	26.9	26.3	24.7	21.5	8.1	6.4
Total T3 (ng/mL) 0.6–1.8		1.79	1.81	4.06	3.90	2.76	1.91	0.76	1.00
TSI (IU/L) <0.54IU/L			<0.10
TPO ab (IU/ml) 0.0–9.0			<0.3
Tg ag (IU/ml) 0.0–4.0			<0.9

PCD: Post contrast day, +available as baseline from prior GI appointment for poor weight gain, methimazole started, hydrocortisone 100 mg q 8/propranolol 40 mg q 8 hours started, methimazole stopped/Hydrocortisone stopped, propranolol stopped.