Diagnosis and Management of Toxic Nodular Goiter

Clinical Presentation and Diagnosis

• The American College of Radiology suggests that toxic multinodular goiter is one of the most common causes of thyrotoxicosis after Graves' disease, presenting with symptoms of hyperthyroidism including heat intolerance, weight loss, tremor, and anxiety in patients with a non-tender goiter and negative thyroid-stimulating immunoglobulins 1
• The presence of negative thyroid-stimulating immunoglobulins (TSH receptor antibodies) is a critical distinguishing feature that excludes Graves' disease, as Graves' disease is diagnosed by the presence of TSH receptor antibodies, according to the American College of Radiology 1
• The American Heart Association, as published in Circulation, indicates that tertiary hypothyroidism would cause hypothyroid symptoms, not hyperthyroid symptoms, making this diagnosis incompatible with the clinical presentation of weight loss, heat intolerance, tremor, and irritability 3, 4
• The American College of Cardiology recommends that radioactive iodine uptake and scan would show patchy uptake with "hot" nodules and suppressed uptake in surrounding tissue to confirm toxic nodular goiter in patients with thyrotoxicosis and a non-tender goiter 1, 5
• The American College of Radiology suggests that thyroid ultrasound would reveal multiple nodules within the goiter and help evaluate for any suspicious features in patients with toxic nodular goiter 1
• The American College of Radiology advises that a non-tender goiter helps distinguish toxic nodular goiter from subacute thyroiditis, which typically presents with a tender thyroid gland 1