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 q 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.
Follicular neoplasm.
Total thyroidectomy specimen showing two lobes measure 5 x 3 x 2.5 cm and 3.5x2.5x2 cm with isthmus 1.5x1 cm. Cut sections showing multiple soft nodules measure 0.5x0.5 cm 3x2.8x2.5 cm. Thyroid capsule is intact.
Thyroid gland, Total thyroidectomy: