A goitre (BrE), or goiter (AmE) (Latin struma), also called a bronchocele, is a swelling in the neck (just below Adam's apple or larynx) due to an enlarged thyroid gland. Classification They are classified in different ways: A "diffuse goiter" is a goiter that has spread through all of the thyroid (and can be a "simple goitre", or a "multinodular goitre"). "Toxic goitre" refers to goitre with hyperthyroidism. These most commonly due to Graves disease, but can be caused by inflammation or a mu… (More on Goiter)