q14 - guest1

[ArchivalUser]

A 30-year-old woman with thyrotoxicosis has a diffusely enlarged gland on palpation of the neck. Her thyroid scan and 24-h uptake show uniformity of uptake and an increased percentage uptake. Which of the following is the most likely diagnosis
A.
Graves' disease
B.
Subacute thyroiditis
C.
Toxic multinodular goiter
D.
Hashimoto's thyroiditis
E.
Toxic adenoma

[ArchivalUser]

aa

[ArchivalUser]

BB

[ArchivalUser]

aa

[ArchivalUser]

The answer is: A

In Graves' disease, the uptake tends to be increased and more uniform. Uptake may be increased without thyrotoxicosis in conditions characterized by defects in organification of iodine, such as is found in some patients with Hashimoto's thyroiditis, but the uptake tends to be patchy.