28. Hashimoto thyreoiditis

Staining: HE

Overview

Organ: Thyroid

Characteristics:

• 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

Theory:

Nothing special.

Area where Hürthle cells are found

Hürthle cells