Parathyroid Cancer
Parathyroid cancer is a rare but serious condition where malignant cells form in the tissues of the parathyroid glands. These glands control the level of calcium in the body by producing parathyroid hormone (PTH). Parathyroid cancer accounts for less than 1% of all cases of hyperparathyroidism, but it can lead to severe complications if not diagnosed and treated early.
Quick Facts
- Extremely rare – less than 100 cases diagnosed per year worldwide
- Often causes very high calcium and PTH levels
- May grow slowly but can recur after treatment
How Parathyroid Cancer Differs from Benign Conditions
Most parathyroid tumors are benign adenomas. In contrast, parathyroid cancer is malignant and may:
- Invade surrounding tissues such as the thyroid or muscles
- Spread to lymph nodes, lungs, or bones (metastasis)
- Recur even after surgical removal
Symptoms of Parathyroid Cancer
Most symptoms are due to extremely high calcium levels in the blood, a condition called hypercalcemia:
- Severe fatigue and weakness
- Bone pain and frequent fractures
- Kidney stones
- Abdominal pain or constipation
- Depression, confusion, or memory problems
- A noticeable neck mass or swelling
- Hoarseness (if the tumor affects nearby nerves)
Diagnosis
Diagnosing parathyroid cancer can be challenging. It often mimics benign hyperparathyroidism. Diagnosis may include:
- Blood tests showing extremely high calcium and PTH levels
- Ultrasound or CT/MRI scans of the neck
- Sestamibi scan to locate abnormal glands
- Fine needle aspiration or biopsy (used cautiously to avoid spreading cells)
In many cases, the diagnosis is confirmed only after surgery and pathological examination of the gland.
Treatment
The main treatment for parathyroid cancer is surgical removal of the affected gland, often along with surrounding tissue. Complete resection during the first surgery offers the best chance of long-term control.
Other treatment options may include:
- Neck dissection if cancer has spread to lymph nodes
- Radiation therapy in some cases
- Supportive medications to lower calcium (e.g., bisphosphonates or calcimimetics)
Monitoring and Recurrence
Parathyroid cancer can come back even years after initial treatment. Long-term follow-up is essential. This includes:
- Routine blood tests to check calcium and PTH levels
- Neck imaging at regular intervals
- Management of hypercalcemia if cancer recurs
Support Tip: Being diagnosed with a rare cancer can feel isolating. Connecting with endocrine cancer support groups and staying in touch with an experienced endocrinologist or oncologist can make a big difference in managing your journey.
Important: If you have chronic kidney disease or are on dialysis, ask your doctor to regularly check your calcium, phosphorus, and PTH levels. Early detection of SHPT can prevent serious bone and heart complications.
Conclusion
Parathyroid cancer is rare but potentially life-threatening if untreated. Early detection, expert surgical care, and long-term monitoring offer the best chance for a positive outcome. If you or a loved one have unexplained high calcium levels or a persistent neck mass, consult an endocrine specialist promptly.