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27

NCCN Guidelines for Patients

®

:

Thyroid Cancer, Version 1.2017

3

Cancer stages and treatment

Cancer stages

Guide 7. Medullary thyroid cancer stages

Stage

Details of that stage

I

• Tumor only in the thyroid and 2 cm or smaller

II

• Tumor only in the thyroid and larger than 2 cm but smaller than 4 cm

• Tumor of any size and cancer has spread to nearby tissue (not lymph nodes)

III

• Tumor of any size and cancer has spread to lymph nodes in the neck near the trachea (windpipe)

or larynx (voice box), and may have spread to nearby tissue

IVA

• Tumor of any size and cancer has spread to nearby tissue in the neck or spread to nerves that lead

to the larynx, and possibly nearby lymph nodes

• Tumor of any size that has spread to nearby tissue and lymph nodes in the neck or those in the

upper chest

IVB • Cancer has spread to tissue near the spinal column or large blood vessels in the chest

• Cancer may have spread to the lymph nodes

IVC • Tumor of any size and cancer has spread to distant parts of the body, and may have spread to the

lymph nodes

Guide 8. Anaplastic thyroid cancer stages

This type is considered stage IV at diagnosis

Stage

Details of that stage

IVA • Tumor only in the thyroid and cancer may have spread to the lymph nodes

IVB • Tumor has grown outside the thyroid and may have spread to the lymph nodes

IVC • Cancer has spread to distant parts of the body and may have spread to the lymph nodes