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An autonomous thyroid nodule or "hot nodule" is one that has thyroid function independent of the homeostatic control of the HPT axis (hypothalamic–pituitary–thyroid axis). According to a 1993 article, such nodules need to be treated only if they become toxic; surgical excision (thyroidectomy), radioiodine therapy, or both may be used. [33]
The laser ablation of thyroid nodules is performed in day hospital or day-surgery. The patient is placed under mild sedation (the same type of sedation used in an endoscopic examination). A local anesthetic is then applied, and one or two needles (depending on the size of the nodule) placed inside the nodule under ultrasound guidance.
FNA is the most cost-effective and accurate method of obtaining a biopsy sample. [5] As thyroid cancer can take up iodine, radioactive iodine is commonly used to treat thyroid carcinomas, followed by TSH suppression by high-dose thyroxine therapy. [6] Nodules are of particular concern when they are found in those under the age of 20. The ...
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]
Hypothyroidism is classified as either primary, secondary, or tertiary. Primary hypothyroidism is for when the cause is due to an abnormality of the thyroid gland, secondary hypothyroidism is when the cause is decreased thyroid-stimulating hormone levels, and tertiary hypothyroidism is when the cause is an inadequate amount of thyrotropin-releasing hormone being released.
Thyroglossal cyst with papillary excrescences (magnified at right), where microscopy showed papillary thyroid cancer. Rarely (in less than 1% of cases), cancer may be present in a thyroglossal duct cyst. [6] These tumors are generally papillary thyroid carcinomas, [6] arising from the ectopic thyroid tissue within the cyst. [7] [8]
Thyroid disease is a medical condition that affects the structure and/or function of the thyroid gland.The thyroid gland is located at the front of the neck and produces thyroid hormones [1] that travel through the blood to help regulate many other organs, meaning that it is an endocrine organ.
Hyperthyroidism is rare in dogs. The most common cause is thyroid carcinoma, a malignant tumor. Signs include weight loss, increased appetite, and enlargement of the thyroid gland. [100] Hypothyroidism is the most common endocrine disease in dogs.