28. Hashimoto thyreoiditis

Staining: HE

Organ: Thyroid



  • Many secondary lymphoid follicles
  • Hürthle cell metaplasia

Hürthle cells are metaplastic follicular cells. They have broad, eosinophilic cytoplasm with atypical nuclei and distinct cell borders. These cells are found in only a small part of the slide.

There is normal thyroid in the periphery of the slide.

Diagnosis: Hashimoto thyroiditis

Risk factors:

  • Young females


Nothing special.

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27. Graves disease

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29. Parathyroid adenoma

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