Goitre
| Goitre | |
|---|---|
| Other names | Goiter | 
| Diffuse hyperplasia of the thyroid | |
| Specialty | Endocrinology | 
| Causes | Iodine deficiency, autoimmune disease, tumors, cyanide poisoning | 
A goitre (British English), or goiter (American English), is a swelling in the neck resulting from an enlarged thyroid gland. A goitre can be associated with a thyroid that is not functioning properly.
Worldwide, over 90% of goitre cases are caused by iodine deficiency. The term is from the Latin gutturia, meaning throat. Most goitres are not cancerous (benign), though they may be potentially harmful.