Overactive enlarged thyroid, illustration 插畫檔

Toxic multinodular goitre, illustration. An enlarged thyroid gland affected by toxic multinodular goitre (TMNG). Multiple nodules of varying sizes are visible across both lobes, giving the gland an irregular and asymmetrical appearance. Some nodules are hyperfunctioning and produce excess thyroid hormones independently of normal regulatory control. This condition is a common cause of hyperthyroidism and is characterised by multiple nodules within a long-standing goitre