What is Bethesda Category II?
Category II—benign This category includes benign follicular nodule (adenomatoid nodule, colloid nodule), lymphocytic (Hashimotos) thyroiditis and granulomatous (subacute) thyroiditis. The benefit of thyroid FNA in these cases is when a reliably benign interpretation is done it avoids unnecessary surgery.
What does follicular pattern mean?
This term is often used to either designate thyroid parenchymal cells, which produce thyroid hormone and show expression of thyroglobulin or the growth pattern of a thyroid lesion—that is, follicle forming or follicular patterning (regarded as the functional unit of the thyroid in normal histology).
What does atypia of undetermined significance Bethesda Category 3 mean?
The “atypia of undetermined significance/follicular lesion of undetermined significance” (AUS/FLUS) category, known as Bethesda Category III, has been ascribed a malignancy risk of 5-15%, but the probability of malignancy in AUS/FLUS specimens remains unclear.
What is atypia undetermined significance?
Atypia of undetermined significance/follicular lesions of undetermined significance (AUS/FLUS) refers to an intermediate histologic category of thyroid nodules in The Bethesda System for Reporting Thyroid Cytopathology.
Does Bethesda Category 3 require surgery?
Among the cases classified as Bethesda category III (n = 510), 75 (14.7%) underwent immediate surgery, 133 (26.1%) underwent repeat FNAC in 1–3 months, and 302 (59.2%) underwent ultrasonography monitoring at 3-month intervals to measure the size and content of the nodule.
What is Bethesda Category III?
The “atypia of undetermined significance/follicular lesion of undetermined significance” (AUS/FLUS) category, known as Bethesda Category III, has been ascribed a malignancy risk of 5–15%, but the probability of malignancy in AUS/FLUS specimens remains unclear.
What is follicular adenoma?
A follicular adenoma is a benign encapsulated tumor of the thyroid gland. It is a firm or rubbery, homogeneous, round or oval tumor that is surrounded by a thin fibrous capsule. A follicular adenoma is a common neoplasm of the thyroid gland.
What is thyroid adenoma?
Thyroid adenomas are benign lesions of the thyroid gland. These lesions may be inactive or active, producing thyroid hormones. In this case, they may be referred to as toxic thyroid adenomas. Patients with thyroid adenomas are usually asymptomatic.
Should a follicular neoplasm be removed?
The issue is all of the follicular thyroid cancer must be effectively removed at the initial surgery. The problem is that both the patient and the surgeon may not know that the thyroid mass is a follicular thyroid cancer until after the surgery is completed.