Goiter

Goiter refers to an abnormal enlargement of the thyroid gland, located at the front of the neck. It may present as a visible swelling and can occur with normal, decreased, or increased thyroid hormone production. The most common global cause is iodine deficiency, although autoimmune disorders such as Graves' disease and Hashimoto's thyroiditis are frequent contributors in iodine-sufficient regions.

Goiters are classified as diffuse (uniform enlargement) or nodular (single or multiple nodules). While many cases are asymptomatic, large goiters can produce compressive symptoms including difficulty swallowing (dysphagia), breathing discomfort, or voice changes due to pressure on adjacent structures. Functional assessment through thyroid profile tests (TSH, T3, T4), ultrasound imaging, and fine-needle aspiration cytology (FNAC) helps determine the underlying pathology.

Management depends on etiology and severity. Observation is appropriate for small, asymptomatic goiters with normal thyroid function. Medical therapy may include iodine supplementation or antithyroid medications. Surgical thyroidectomy is indicated for suspicious nodules, malignancy, cosmetic concerns, or compressive symptoms. Radioiodine therapy may be considered in selected hyperfunctioning cases.