Endocrinology MCQ 011

A 35-year-old black woman comes to see you for a complete physical exam. She has experienced cold intolerance, weakness, and constipation for 3 months. Her menses are regular but scanty. Her history is significant for hypertension and peptic ulcer disease, and her family history includes hypertension and diabetes. The patient is married but has never been pregnant and takes cimetidine 400 mg at bedtime, sustained-release nifedipine 60 mg daily, and docusate sodium 100 mg three times a day. Her pulse is 58 beats/minute with a blood pressure of 135/90 mm Hg. Her skin is dry and scaly, and she has hung-up reflexes. The rest of her exam is normal, and the following labs are obtained: serum chemistries are normal except for a creatine kinase of 300 U/L (normal range, 26-140 U/L); CBC is normal, free thyroxine (T4) is 6.4 pmol/L (normal range,10 – 22 pmol/L), and thyroid stimulating hormone (TSH) is 1.5 mIU (normal range, 0.3-5.0 mIU). Which of the following tests would you order?

A. Free triiodothyronine (T3)
B. Thyroid scan
C. Thyroid uptake
D. Pituitary magnetic resonance imaging (MRI)
E. Antithyroid antibodies

Answer:

Tags: MCQ, Endocrinology, thyroid

Category: Endocrinology MCQs