A 35-year-old woman presents with palpitations, heat intolerance, and a 10-lb weight loss over 2 months. Exam reveals a diffusely enlarged thyroid and lid lag. TSH is undetectable. What is the most likely diagnosis?
-
A
Toxic multinodular goiter
-
B
Graves' disease
-
C
Subacute thyroiditis
-
D
Toxic adenoma