Goiter is an abnormal enlargement of the thyroid gland, the butterfly-shaped gland at the base of the neck. While iodine deficiency is a major global cause, both too little and too much iodine can ...

A lump on the side of the neck could be a swollen lymph node caused by a bacterial or viral infection or a benign (non-cancerous) growth like a cyst, lipoma, or goiter. Swollen, infected salivary ...