The area in question consists of crowded and irregularly enlarged thyroid follicles lined by Hurthle cells with little nuclear atypia. There is lymphoplasmacytic infiltration but not stromal desmoplasia in the background, and the border of the lesion is not encapsulated. From these photos, this lesion is a hyperplastic nodule seen in Hashimoto thyroiditis and not diagnostic of any neoplasia or malignancy.
The area in question consists of crowded and irregularly enlarged thyroid follicles lined by Hurthle cells with little nuclear atypia. There is lymphoplasmacytic infiltration but not stromal desmoplasia in the background, and the border of the lesion is not encapsulated. From these photos, this lesion is a hyperplastic nodule seen in Hashimoto thyroiditis and not diagnostic of any neoplasia or malignancy.