May Cause

Brain ischemia secondary to extracranial lesion

Fetal neck mass

Neck mass

Soft-tissue neck mass

Subglottic tracheal narrowing

Superior vena cava syndrome

Thyroid lesion

Thyroid mass

May Be Caused by

AIDS

Amyloidosis

Ascher syndrome

Costello syndrome

Cowden syndrome

Deaf mutism-goiter-euthyroidism syndrome

Familial multinodular goiter

Hyperthyroidism

Mazabraud syndrome

Multiple endocrine neoplasia syndrome type 2B

Pendred syndrome

Polyglandular autoimmune disease

Polyostotic fibrous dysplasia

Prader-Willi syndrome

Troell-Junet syndrome

Weismann-Netter syndrome

Werner syndrome