History: Neck mass
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Not too hard right?
Enlarged, hypervascular thyroid gland = thyroiditis. In this case, and perhaps[s most commonly, Graves disease would be culprit.
This usually is not imaged since the physical exam and symptoms are usually fairly textbook, but on occassion you might get a triage order for “neck mass” which is really just a swollen tender thyroid gland. Remember, this can also be a cause of dysphagia.