thyroid imaging

Question 1

when to image when suspect hypothyroidism

Answer 1

no role for imaging

Question 2

best test for order for hypeorthyroid patient?

Answer 2

nuclear medicine iodine uptake and scan

Question 3

normal radioactive iodine uptakes are ______

Answer 3

10-25%

Question 4

prominent thyroid without focal nodule

Answer 4

diffuse goiter

Question 5

when to image a goiter

Answer 5

don’t need to image goiters b/c cancer usu presents as nodules

Question 6

etiologies for distinct nodules (3)

Answer 6

1. colloid cyst
2. benign adenoma
3. malignancy (papillary or follicular)

Question 7

what to order to work up different thyroid morphologies

Answer 7

ultrasound

Question 8

what test can differentiate benign and malignant nodules?

Answer 8

none

Question 9

when to do FNA after positive US?

Answer 9

1. microcalcifications on ultrasound

2. nodules >2.5 cm