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.
Anterior neck mass diagnosed as a Multi-Nodular Goiter with bilateral retrosternal extension.
Total thyroidectomy specimen composed of two thyroid lobes with an intact capsule. The first lobe measured 11.5 × 5.5 × 4.5 cm and contained two grayish nodules, the largest measuring 7.5 x 5 x 5 cm. The second lobe measured 12.5 × 5.5 × 4.5 cm and showed two grayish nodules, largest 7.5 x 5.5 x 4.5 cm.
Total thyroidectomy: