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A parathyroid adenoma is a benign tumor of the parathyroid gland. It generally causes hyperparathyroidism; there are very few reports of parathyroid adenomas that were not associated with hyperparathyroidism. [ 1] A human being usually has four parathyroid glands located on the posterior surface of the thyroid in the neck.
Renal ultrasonography ( Renal US) is the examination of one or both kidneys using medical ultrasound . Ultrasonography of the kidneys is essential in the diagnosis and management of kidney-related diseases. The kidneys are easily examined, and most pathological changes in the kidneys are distinguishable with ultrasound.
Hyperparathyroidism is an increase in parathyroid hormone (PTH) levels in the blood. [ 1][ 4] This occurs from a disorder either within the parathyroid glands ( primary hyperparathyroidism) or as response to external stimuli ( secondary hyperparathyroidism ). [ 1] Symptoms of hyperparathyroidism are caused by inappropriately normal or elevated ...
The most common cause of primary hyperparathyroidism is a sporadic, single parathyroid adenoma [5] resulting from a clonal mutation (~97%). Less common are parathyroid hyperplasia [6] (~2.5%), parathyroid carcinoma (malignant tumor), and adenomas in more than one gland (together ~0.5%).Primary hyperparathyroidism is also a feature of several familial endocrine disorders: Multiple endocrine ...
22.1 million (2015) [ 5] Deaths. 16,100 (2015) [ 6] Kidney stone disease, also known as renal calculus disease, nephrolithiasis or urolithiasis, is a crystallopathy where a solid piece of material ( renal calculus) develops in the urinary tract. [ 2] Renal calculi typically form in the kidney and leave the body in the urine stream. [ 2]
These procedures generally use lower frequencies than medical diagnostic ultrasound (from 0.7 to 2 MHz), but higher the frequency means lower the focusing energy. HIFU treatment is often guided by MRI. Focused ultrasound may be used to dissolve kidney stones by lithotripsy. Ultrasound may be used for cataract treatment by phacoemulsification.
Excretory system. The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body. The dual function of excretory systems is the elimination of the waste products of metabolism and to drain the ...
Triiodothyronine, also known as T 3, is a thyroid hormone. It affects almost every physiological process in the body, including growth and development, metabolism, body temperature, and heart rate. [1] Production of T 3 and its prohormone thyroxine (T 4) is activated by thyroid-stimulating hormone (TSH