Thyroid gland shows nodular adenomatous hyperplasia. Nodules are variable in size and composed of small and large crowded follicles full of thick colloid and lined by mature epithelium. Sections from some of the nodules show compact microfollicles devoid of colloid and lined by cuboidal cells separated by delicate vascular stroma. In these follicles nuclei are vesicular and look active but no appreciable mitosis. Stroma shows mild fibrosis. No evidence of hyperfunction or malignancy.
Multinodular goiter.
Total Thyroidectomy: Consisted of two lobes and an isthmus. The first lobe measured 7 x 5 x 2.5 cm, the second lobe measured 5 x 3 x 2.5 cm, and the isthmus measured 1.5 x 1 cm. Upon sectioning, both lobes exhibited multiple grayish nodules. The largest nodule in the first lobe measured 1 cm, and the largest nodule in the second lobe measured 3 cm.
Total thyroidectomy: