What is the difference between a fluid- filled nodule and solid nodule?
A thyroid nodule is a lump in or on the thyroid gland. Nodules can be caused by a simple overgrowth of normal thyroid tissue, fluid-filled cysts, inflammation, or a tumor. When there's an overgrowth of normal thyroid tissues, this is commonly referred to as a thyroid adenoma. Thyroid adenomas sometimes form as a result of degenerated cysts, or fluid-filled cavities, in the thyroid.
A heterogeneous hypervascular thyroid nodule could mean a few different things. They only way to be sure of what it is, is to have it checked out by a physician. It would need to have a biopsy done on it. The term heterogeneous means that the nodule is both solid and fluid filled. Hypervascular could mean that it is a goiter.
A manometer is a device that is used to measure the pressure of a fluid. The U-shaped glass tube is partially filled with a liquid, usually mercury. The difference between the height of the mercury corresponds to the difference between the pressure of the fluid in the container and the atmospheric pressure.
A hypoechoic nodule is a fluid-filled or solid mass that causes weak, limited echoes in comparison to the surrounding tissue during an ultrasound or sonogram. It is most frequently detected in the thyroid, and caused by diet-induced iodine deficiency, autoimmune disorders, radiation exposure and genetics.