Endocrine Pathology Online
Fibrous variant of Hashimoto’s Thyroiditis - 7 Quick Facts
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1) The fibrous variant of Hashimoto’s thyroiditis is probably a genuine variant rather than just a late stage of Hashimoto's thyroiditis since these patients appear to have pronounced fibrosis from an early stage. 2) The fibrosis is in broad hyaline bands and does not extend into other tissues. 3) Hurthle cells may be present. 4) Obliterative vascular changes are not seen. 5) The plasma cells present express IgG. 6) Lymphoid aggregates may be present. 7) The patients may have other organ-specific autoimmune diseases as with regular Hashimoto's thyroiditis, and the condition is not associated with fibromatoses.
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