Post-test: Thyroiditis

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Which of the following ultrasound findings is characteristic of Hashimoto's thyroiditis?

Choose one

	"Geographic" or "map-like" appearance of hypoechoic areas
	Ill-defined thyroid masses with complex fluid collections
	Diffusely heterogeneous and hypoechoic parenchyma with a "Swiss cheese" appearance
	Marked hypoechogenicity with extension beyond the thyroid capsule