Note the clear vacuoles in the colloid next to the epithelium where the increased activity of the epithelium to produce increased thyroid hormone has led to scalloping out of the colloid.

临皮细胞的胶质内可见清晰空泡，此处皮组织细胞活跃，甲状腺激素分泌增，扇的胶质边缘。