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Secondary hyperparathyroidism is the medical condition of excessive secretion of parathyroid hormone (PTH) by the parathyroid glands in response to hypocalcemia (low blood calcium levels), with resultant hyperplasia of these glands. This disorder is primarily seen in patients with chronic kidney failure.
Achilles tendinitis, also known as Achilles tendinopathy, is soreness of the Achilles tendon. It is accompanied by alterations in the tendon's structure and mechanical properties. [2] The most common symptoms are pain and swelling around the back of the ankle. [1] The pain is typically worse at the start of exercise and decreases thereafter. [3]
Tendinopathy is a type of tendon disorder that results in pain, swelling, and impaired function. [2] The pain is typically worse with movement. [2] It most commonly occurs around the shoulder (rotator cuff tendinitis, biceps tendinitis), elbow (tennis elbow, golfer's elbow), wrist, hip, knee (jumper's knee, popliteus tendinopathy), or ankle (Achilles tendinitis).
Hyperparathyroidism is a condition caused by overproduction of PTH, and can be divided into three types. [citation needed] Primary hyperparathyroidism happens when the normal mechanism of regulation by negative feedback of calcium is interrupted, or in other words the amount of blood calcium would ordinarily signal less production of PTH.
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]
Hyperparathyroidism occurs most commonly in postmenopausal women. Hyperparathyroidism can be caused by a tumor, or adenoma, in the parathyroid gland or by increased levels of parathyroid hormone due to hypocalcemia. [2] Approximately 10% of individuals with cancer experience hypercalcemia due to malignancy. [2]
Micrograph of a parathyroid adenoma (left) and normal parathyroid gland (right). H&E stain.. Hyperparathyroidism is confirmed by blood tests such as calcium and PTH levels. A specific test for parathyroid adenoma is sestamibi parathyroid scintigraphy, often referred to as sestamibi scan or, more colloquially, MIBI scan.
An enthesophyte, consisting of calcification deposits within the Achilles tendon at its calcaneal insertion. The Achilles tendon is wider than normal, further suggesting inflammation . Enthesophytes are abnormal bony projections at the attachment of a tendon or ligament . [ 1 ]