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Thyroid nodules are nodules (raised areas of tissue or fluid) which commonly arise within an otherwise normal thyroid gland. [1] They may be hyperplastic or tumorous , but only a small percentage of thyroid tumors are malignant .
Low uptake suggests thyroiditis, high uptake suggests Graves' disease, [5] and unevenness in uptake suggests the presence of a nodule. [citation needed] 123 I has a shorter half-life than 131 I (a half day vs. 8.1 days), so use of 123 I exposes the body to less radiation, at the expense of less time to evaluate delayed scan images. [6]
Potassium iodide is a chemical compound, medication, and dietary supplement. [4] [5] It is a medication used for treating hyperthyroidism, in radiation emergencies, and for protecting the thyroid gland when certain types of radiopharmaceuticals are used. [6]
Colloid nodules may be initially identified as an unspecified kind of thyroid nodule. Follow-up examinations typically include an ultrasound if it is unclear whether or not there really is a nodule present. Once the presence of a nodule has been confirmed, the determination of the kind of thyroid nodule is done by fine needle aspiration biopsy. [7]
Toxic multinodular goiter (TMNG), also known as multinodular toxic goiter (MNTG), is an active multinodular goiter associated with hyperthyroidism.. It is a common cause of hyperthyroidism [2] [3] in which there is excess production of thyroid hormones from functionally autonomous thyroid nodules, which do not require stimulation from thyroid stimulating hormone (TSH).
However, if the benign nodule is inhibiting the patient's normal functions of life; such as breathing, speaking, or swallowing, the thyroid may need to be removed. [citation needed] Sometimes only part of the thyroid is removed in an attempt to avoid causing hypothyroidism. There is still a risk of hypothyroidism though, as the remaining ...