Search

Parathyroid adenoma

Definition

A parathyroid adenoma is a noncancerous (benign) tumor of the parathyroid glands, which are located in the neck.

Causes, incidence, and risk factors

The parathyroid glands in the neck help control calcium use and removal by the body. They do this by producing parathyroid hormone, or PTH. PTH helps control calcium, phosphorus, and vitamin D levels in the blood and bone.

Parathyroid adenomas can be due to a genetic problem. Parathyroid adenomas are the most common cause of hyperparathyroidism  (overactive parathyroid glands), which leads to increased blood calcium levels.

Women over age 60 have the highest risk for developing this condition. Radiation to your head or neck also increases your risk.

Symptoms

Many people have no symptoms. The condition is often discovered accidentally when blood tests are done for another medical reason.

Symptoms that may occur include:

Signs and tests

Blood tests are done to check the levels of parathyroid hormone, calcium , phosphorus , and vitamin D.

A 24-urine test may be done to check for increased calcium in the urine.

Other tests include:

  • Bone density exam
  • Kidney ultrasound or CT scan (may show kidney stones)
  • Kidney x-rays (may show kidney stones)
  • MRI
  • Neck ultrasound
  • Sestamibi neck scan (may show swelling of the parathyroid glands)

Treatment

Surgery is the most common treatment, and it often cures the condition. However, some people choose to only have regular checkups with their health care provider if the condition is mild.

Support Groups

Expectations (prognosis)

The outlook is generally good.

Complications

and the increased risk for bone fractures is the most common concern.Osteoporosis

Other complications are less common, but may include:

Calling your health care provider

Call your health care provider if you have symptoms of this condition.

Prevention

References

Wysolmerski JJ, Insogna KL. The parathyroid glands, hypercalcemia, and hypocalcemia. In: Kronenberg HM, Schlomo M, Polansky KS, Larsen PR, eds. . 11th ed. St. Louis, Mo: WB Saunders; 2008:chap. 266.

Bringhurst FR, Demay MB, Kronenberg HM. Disorders of mineral metabolism. In: Kronenberg HM, Schlomo M, Polansky KS, Larsen PR, eds. . 11th ed. St. Louis, Mo: WB Saunders; 2008:chap. 27.

Wysolmerski JJ, Insogna KL. The parathyroid glands, hypercalcemia, and hypocalcemia. In: Goldman L, Schafer AI, eds. . 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 253.

Encyclopedia content is provided as information only and not intended to replace the advice and instruction from your personal physician.