What is the second most common type of thyroid cancer?
Follicular thyroid cancer is the second most common type of thyroid cancer (papillary thyroid cancer is the most common thyroid cancer).
How many types of thyroid cancer is there?
There are four main types of cancer of the thyroid (based on how the cancer cells look under a microscope): papillary, follicular, medullary, and anaplastic.
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 is a Category 4 nodule?
Bethesda category IV nodules are described as follicular neoplasm or suspicious for follicular neoplasm (FN/SFN).
How is the type of thyroid cancer determined?
Since a cancer cell usually looks different than a normal cell, the type of thyroid cancer is determined by microscopic examination of the thyroid cells found in the nodule (neck lump) or growth. If surgery is recommended, the nodule(s) and/or mass is removed and examined by a pathologist to establish the diagnosis.
What does follicular variant mean?
Encapsulated follicular variant is characterized by the presence of a complete capsule or well circumscribed border and usually RAS mutation. Infiltrative follicular variant is associated with infiltrative growth, risk of nodal metastasis and BRAF V600E mutation, akin to classic type of papillary thyroid carcinoma.
What are the 4 main types of thyroid cancer?
Types of thyroid cancer
- Papillary thyroid cancer. Papillary thyroid cancer develops from follicular cells and usually grow slowly.
- Follicular thyroid cancer.
- Hurthle cell cancer.
- Medullary thyroid cancer (MTC).
- Anaplastic thyroid cancer.
What are the three types of thyroid?
In hypothyroidism, your thyroid doesn’t produce enough of these hormones. This is also known as an underactive thyroid. There are three types of hypothyroidism: primary, secondary, and tertiary. In primary hypothyroidism, your thyroid is being stimulated properly.