What is a colloid nodule?

Colloid nodules are benign buildups of thyroid cells. Follicular adenomas are also benign. Thyroid cysts are balloon-like growths inside of your thyroid gland that are filled with fluid. They are almost never cancerous.

What causes colloid nodules?

Colloid nodular goiters are also known as endemic goiters and are usually caused by inadequate iodine in diet. They tend to occur in certain geographical areas with iodine-depleted soil, usually areas away from the sea coast.

How is ectopic thyroid diagnosed?

Diagnosis. Scintigraphy, using Tc-99m, I-131, or I-123, is the most important diagnostic tool to detect ectopic thyroid tissue and shows the absence or presence of thyroid in its normal location. Thyroid scan can also unmask additional sites of thyroid tissue.

Where is a colloid nodule found?

Colloid nodules: These are one or more overgrowths of normal thyroid tissue. These growths are benign (not cancer). They may grow large, but they do not spread beyond the thyroid gland.

What colloid contains?

A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance. Some definitions specify that the particles must be dispersed in a liquid, while others extend the definition to include substances like aerosols and gels.

Do colloid nodules grow?

Colloid nodules, also known as adenomatous nodules or colloid nodular goiter are benign, noncancerous enlargement of thyroid tissue. Although they may grow large, and there may be more than one, they are not malignant and they will not spread beyond the thyroid gland.

Where can ectopic thyroid tissue be found?

Ectopic thyroid tissue can be found not only as a component of thyroglossal duct cysts, but anywhere along the course of the thyroglossal duct [1, 3, 4]. The most frequent location is the base of the tongue, where the presence of ectopic thyroid tissue may result in swallowing difficulty and respiratory obstruction.

What is ectopic hyperthyroidism?

Ectopic thyroid is defined as any thyroid tissue not located in its usual position (i.e., anterior and lateral to the second, third, and fourth tracheal rings). During development, the thyroid gland descends from the foramen cecum at the base of the tongue to its location at the front of the trachea.

How do you identify a colloid?

To identify a colloid mixture from a solution, you can use the Tyndall effect. This is where you pass a light through the mixture. If the light bounces off the particles, you will see the light shine through and you have a colloid mixture.

Can colloid nodule turn malignant?

Most nodules are cysts filled with fluid or with a stored form of thyroid hormone called colloid. Solid nodules have little fluid or colloid and are more likely to be cancerous. Still, most solid nodules are not cancer.

What does Dyshormonogenesis mean?

A defect in the synthesis of the thyroid hormone thyroxine due to an enzyme failure. The low levels of thyroxine in the blood cause a large output of thyroid stimulating hormone (TSH) from the PITUITARY gland and the result is an enlargement of the thyroid gland (goitre).