Parathyroid carcinoma - a study of 29 cases

Area of Science:

• Endocrinology
• Surgical Oncology
• Oncology

Background:

• Parathyroid carcinoma is a rare endocrine malignancy, comprising less than 1% of primary hyperparathyroidism cases.
• Distinguishing parathyroid carcinoma from adenoma preoperatively is challenging, necessitating multidisciplinary input.
• Complete surgical resection is the primary treatment modality for parathyroid cancer.

Purpose of the Study:

• To analyze outcomes of surgically treated parathyroid cancer patients.
• To highlight diagnostic challenges and treatment strategies for parathyroid carcinoma.

Main Methods:

• Retrospective analysis of 29 patients surgically treated for parathyroid cancer between 1983 and 2018.
• Inclusion criteria: patients operated for primary hyperparathyroidism with suspected parathyroid cancer.

Main Results:

• Parathyroid cancer was confirmed in 29 (2.8%) of 1019 patients operated for primary hyperparathyroidism.
• The confirmed cases represented 43.9% of 71 patients initially suspected of having parathyroid cancer.
• The study included 12 men and 17 women, aged 27-77 years (mean 55.1).

Conclusions:

• Parathyroid carcinoma should be suspected in primary hyperparathyroidism patients with severe hypercalcemia, enlarged neck circumference, and renal/skeletal issues.
• Definitive diagnosis is often postoperative; complete surgical resection at a specialized center improves outcomes.