http://www.aace.com/pub/thyroidbrochures/pdfs/Thyroid_Carcinoma.pdf
American Association of Clinical Endocrinologists
The thyroid gland is located in the lower front of the neck, below the larynx (“Adam’s apple”) and above the collarbones. Thyroid cancer (carcinoma) usually appears as a painless lump in this area. This fact sheet provides information for patients on thyroid cancer, including symptoms, causes, diagnosis, and treatment.