<unk>  scan may be helpful in the diagnosis and fully characterizing the extent of substernal<unk> e. Findings on<unk>  scan suggestive of<unk><unk>  include enlarged and heterogeneous thyroid gland.<unk>  scan is useful in defining the extent of tracheal deviation and compression.<unk>  scan–guided fine needle aspiration biopsy(FNAB) may be helpful.
Toxic multinodular goiter CT
Toxic multinodular goiter MRI
Anaplastic thyroid cancer biopsy
Papillary thyroid cancer biopsy
Riedel's thyroiditis MRI
Follicular thyroid cancer MRI
Thyroid nodule CT
De Quervain's thyroiditis MRI