Medication Summary
No medical treatment is available for parathyroid carcinoma except to reduce hypercalcemia. However, hypercalcemia associated with parathyroid carcinoma is often severe and refractory to medical treatment.
Calcimimetic Agent
Class Summary
These agents bind to and modulate the parathyroid calcium-sensing receptor, increase sensitivity to extracellular calcium, and reduce parathyroid hormone secretion.
Cinacalcet (Sensipar)
Directly lowers parathyroid hormone (PTH) levels by increasing sensitivity of calcium-sensing receptor on chief cell of parathyroid gland to extracellular calcium. Also results in concomitant serum calcium decrease.
Bisphosphonate
Class Summary
Bisphosphonates are analogs of pyrophosphate and act by binding to hydroxyapatite in bone-matrix, thereby inhibiting the dissolution of crystals. They prevent osteoclast attachment to the bone matrix and osteoclast recruitment and viability.
Pamidronate (Aredia)
Inhibits normal and abnormal bone resorption. Appears to inhibit bone resorption without inhibiting bone formation and mineralization.
Alendronate (Fosamax)
Available in the United States, but not yet indicated for treatment of hypercalcemia; alendronate probably is useful for long-term prevention of recurrence of hypercalcemia following use of more conventional therapy (ie, hydration and pamidronate). Useful in preventing and treating osteoporosis, which is a complication of prolonged mild hypercalcemia.
Etidronate disodium (Didronel)
First-generation bisphosphonate that has been shown to increase bone density at spine and femoral neck, though studies have failed to demonstrate a decrease in fractures. Acts principally by inhibiting bone resorption and does not alter renal tubular reabsorption of calcium. The effects of etidronate increase as the dose increases.
Does not affect hypercalcemia in patients with hyperparathyroidism.
Zoledronic acid (Zometa)
Inhibits bone resorption possibly by acting on osteoclasts or osteoclast precursors. Median duration of complete response (maintaining normalized calcium levels) and time to relapse reported as 32 and 30 d, respectively.
Human calcitonin analogs
Class Summary
These agents promote the renal excretion of calcium, making them suitable for the treatment of hypercalcemia.
Calcitonin (Miacalcin, Osteocalcin)
Lowers elevated serum calcium in patients with multiple myeloma, carcinoma, or primary hyperparathyroidism. Can expect a higher response when serum calcium levels are high.
Onset of action is approximately 2 h following injection and activity lasts for 6-8 h. May lower calcium levels for 5-8 d by about 9% if given q12h. IM route is preferred at multiple injection sites with dose >2 mL.
Schaapveld M, Jorna FH, Aben KK, Haak HR, Plukker JT, Links TP. Incidence and prognosis of parathyroid gland carcinoma: A population-based study in The Netherlands estimating the preoperative diagnosis. Am J Surg. Aug 20 2011;[Medline].
Mittendorf EA, McHenry CR. Parathyroid carcinoma. J Surg Oncol. Mar 1 2005;89(3):136-42.
Yip L, Seethala RR, Nikiforova MN, Nikiforov YE, Ogilvie JB, Carty SE, et al. Loss of heterozygosity of selected tumor suppressor genes in parathyroid carcinoma. Surgery. Dec 2008;144(6):949-55; discussion 954-5. [Medline].
Obara T, Fujimoto Y. Diagnosis and treatment of patients with parathyroid carcinoma: an update and review. World J Surg. Nov-Dec 1991;15(6):738-44. [Medline].
Iacobone M, Lumachi F, Favia G. Up-to-date on parathyroid carcinoma: analysis of an experience of 19 cases. J Surg Oncol. Dec 15 2004;88(4):223-8. [Medline].
Douglas L. Fraker. Chapter 44 - Cancer of the Endocrine System, Section 3: Parathyroid Tumors. In: Vincent T. DeVita, Jr., Theodore S. Lawrence, Steven A. Rosenberg. Cancer: Principles & Practice of Oncology. 8th. Philadelphia: Lippincott Williams & Wilkins; 2008:1682-1690.
Wynne AG, van Heerden J, Carney JA. Parathyroid carcinoma: clinical and pathologic features in 43 patients. Medicine (Baltimore). Jul 1992;71(4):197-205. [Medline].
Busaidy NL, Jimenez C, Habra MA, Schultz PN, El-Naggar AK, Clayman GL, et al. Parathyroid carcinoma: a 22-year experience. Head Neck. Aug 2004;26(8):716-26. [Medline].
Wang CA, Gaz RD. Natural history of parathyroid carcinoma. Diagnosis, treatment, and results. Am J Surg. Apr 1985;149(4):522-7. [Medline].
Hakaim AG, Esselstyn CB Jr. Parathyroid carcinoma: 50-year experience at The Cleveland Clinic Foundation. Cleve Clin J Med. Jul-Aug 1993;60(4):331-5. [Medline].
Favia G, Lumachi F, Polistina F, D'Amico DF. Parathyroid carcinoma: sixteen new cases and suggestions for correct management. World J Surg. Dec 1998;22(12):1225-30. [Medline].
Flye MW, Brennan MF. Surgical resection of metastatic parathyroid carcinoma. Ann Surg. Apr 1981;193(4):425-35. [Medline].
Talat N, Schulte KM. Clinical presentation, staging and long-term evolution of parathyroid cancer. Ann Surg Oncol. Aug 2010;17(8):2156-74. [Medline].
Hundahl SA, Fleming ID, Fremgen AM, Menck HR. Two hundred eighty-six cases of parathyroid carcinoma treated in the U.S. between 1985-1995: a National Cancer Data Base Report. The American College of Surgeons Commission on Cancer and the American Cancer Society. Cancer. Aug 1 1999;86(3):538-44. [Medline].
Lee PK, Jarosek SL, Virnig BA, Evasovich M, Tuttle TM. Trends in the incidence and treatment of parathyroid cancer in the United States. Cancer. May 1 2007;109(9):1736-41. [Medline].
Schaapveld M, Jorna FH, Aben KK, et al. Incidence and prognosis of parathyroid gland carcinoma: a population-based study in The Netherlands estimating the preoperative diagnosis. Am J Surg. Nov 2011;202(5):590-7. [Medline].
Shattuck TM, Valimaki S, Obara T. Somatic and germ-line mutations of the HRPT2 gene in sporadic parathyroid carcinoma. N Engl J Med. Oct 30 2003;349(18):1722-9. [Medline].
Lim S, Elston MS, Gill AJ, Marsh DJ, Conaglen JV. Metastatic parathyroid carcinoma initially misdiagnosed as parathyroid adenoma: the role of parafibromin in increasing diagnostic accuracy. Intern Med J. Sep 2011;41(9):695-9. [Medline].
Vasef MA, Brynes RK, Sturm M, Bromley C, Robinson RA. Expression of cyclin D1 in parathyroid carcinomas, adenomas, and hyperplasias: a paraffin immunohistochemical study. Mod Pathol. Apr 1999;12(4):412-6. [Medline].
Woodard GE, Lin L, Zhang JH, Agarwal SK, Marx SJ, Simonds WF. Parafibromin, product of the hyperparathyroidism-jaw tumor syndrome gene HRPT2, regulates cyclin D1/PRAD1 expression. Oncogene. Feb 10 2005;24(7):1272-6. [Medline].
Cryns VL, Thor A, Xu HJ. Loss of the retinoblastoma tumor-suppressor gene in parathyroid carcinoma. N Engl J Med. Mar 17 1994;330(11):757-61. [Medline].
Haven CJ, van Puijenbroek M, Tan MH, Teh BT, Fleuren GJ, van Wezel T, et al. Identification of MEN1 and HRPT2 somatic mutations in paraffin-embedded (sporadic) parathyroid carcinomas. Clin Endocrinol (Oxf). Sep 2007;67(3):370-6. [Medline].
van Baardwijk A, de Jong J, Arens A, Thimister P, Verseput G, Kremer B, et al. False-positive FDG-PET scan due to brown tumours. Eur J Nucl Med Mol Imaging. Mar 2006;33(3):393-4. [Medline].
Howell VM, Gill A, Clarkson A, Nelson AE, Dunne R, Delbridge LW, et al. Accuracy of combined protein gene product 9.5 and parafibromin markers for immunohistochemical diagnosis of parathyroid carcinoma. J Clin Endocrinol Metab. Feb 2009;94(2):434-41. [Medline].
Fang SH, Lal G. Parathyroid cancer. Endocr Pract. Mar-Apr 2011;17 Suppl 1:36-43. [Medline].
Schulte KM, Talat N, Miell J, Moniz C, Sinha P, Diaz-Cano S. Lymph node involvement and surgical approach in parathyroid cancer. World J Surg. Nov 2010;34(11):2611-20. [Medline].
Bergero N, De Pompa R, Sacerdote C. Galectin-3 expression in parathyroid carcinoma: immunohistochemical study of 26 cases. Hum Pathol. Aug 2005;36(8):908-14.
Cetani F, Ambrogini E, Viacava P, Pardi E, Fanelli G, Naccarato AG, et al. Should parafibromin staining replace HRTP2 gene analysis as an additional tool for histologic diagnosis of parathyroid carcinoma?. Eur J Endocrinol. May 2007;156(5):547-54. [Medline].
DeLellis RA. Parathyroid carcinoma: an overview. Adv Anat Pathol. Mar 2005;12(2):53-61.
Fernandez-Ranvier GG, Jensen K, Khanafshar E, Quivey JM, Glastonbury C, Kebebew E, et al. Nonfunctioning parathyroid carcinoma: case report and review of literature. Endocr Pract. Nov-Dec 2007;13(7):750-7. [Medline].
Hunt JL, Carty SE, Yim JH. Allelic loss in parathyroid neoplasia can help characterize malignancy. Am J Surg Pathol. Aug 2005;29(8):1049-55.
Iihara M, Okamoto T, Suzuki R, Kawamata A, Nishikawa T, Kobayashi M, et al. Functional parathyroid carcinoma: Long-term treatment outcome and risk factor analysis. Surgery. Dec 2007;142(6):936-43; discussion 943.e1. [Medline].
Kleinpeter KP, Lovato JF, Clark PB. Is parathyroid carcinoma indeed a lethal disease?. Ann Surg Oncol. Mar 2005;12(3):260-6.
Lin L, Czapiga M, Nini L, Zhang JH, Simonds WF. Nuclear localization of the parafibromin tumor suppressor protein implicated in the hyperparathyroidism-jaw tumor syndrome enhances its proapoptotic function. Mol Cancer Res. Feb 2007;5(2):183-93. [Medline].
Lumachi F, Basso SM, Basso U. Parathyroid cancer: etiology, clinical presentation and treatment. Anticancer Res. Nov-Dec 2006;26(6C):4803-7. [Medline].
Rodgers SE, Perrier ND. Parathyroid carcinoma. Curr Opin Oncol. Jan 2006;18(1):16-22.
Sandelin K, Thompson NW, Bondeson L. Metastatic parathyroid carcinoma: dilemmas in management. Surgery. Dec 1991;110(6):978-86; discussion 986-8. [Medline].
Sandelin K, Tullgren O, Farnebo LO. Clinical course of metastatic parathyroid cancer. World J Surg. Jul-Aug 1994;18(4):594-8; discussion 599. [Medline].
van Heerden JA, Weiland LH, ReMine WH, Walls JT, Purnell DC. Cancer of the parathyroid glands. Arch Surg. Apr 1979;114(4):475-80. [Medline].
Vetto JT, Brennan MF, Woodruf J. Parathyroid carcinoma: diagnosis and clinical history. Surgery. Nov 1993;114(5):882-92. [Medline].
Yart A, Gstaiger M, Wirbelauer C. The HRPT2 tumor suppressor gene product parafibromin associates with human PAF1 and RNA polymerase II. Mol Cell Biol. Jun 2005;25(12):5052-60.

