Normocalcemic Parathyroid Adenoma with Brown's Tumor Maxilla: A Rare Case

Document Type : Case Report

Authors

1 Department of Otorhinolaryngology, Pt B.D Sharma PGIMS, Rohtak, Haryana, India.

2 Department of Pathology, Pt B.D Sharma PGIMS, Rohtak, Haryana, India.

Abstract

Introduction:
Primary hyperparathyroidism due to parathyroid adenoma commonly causes raised serum calcium and focal giant cell lytic lesions in bones known as Brown’s tumors. It is more common in females in the post-menopausal age group.
Case Report:
We report a case of a 29-year-old female patient with Brown’s tumor maxilla in a clinical setting of normocalcemic primary hyperparathyroidism. The patient presented to us with facial and palatal swelling for which FNAC was done. Cytology revealed hemosiderin-laden macrophages suspicious for Brown’s tumor. On further imaging studies such as CT Neck, Tc99 Sestamibi scan, and other biochemical tests like parathyroid hormone assay and serum calcium level, the diagnosis of a hyperfunctioning parathyroid gland with normal calcium level was made. Parathyroidectomy was performed and parathyroid adenoma came out to be the primary pathology. On post-operative follow up there was regression of the swelling on the face and palate relieving the patient symptomatically.
Conclusion:
The diagnostic suspicion of primary hyperparathyroidism should be kept in mind whenever a young female presents with suspected Brown’s tumor, even with normal serum calcium levels, for appropriate management. Ours was a highly uncommon case that was a diagnostic challenge and had a successful treatment outcome. Very few such cases have been reported in the literature to date to the best of our knowledge.

Keywords


  1. Suarez-Cunqueiro MM, Schoen R, Kersten A, Klisch J, Schmelzeisen R. Brown’s tumor of the mandible as first manifestation of atypical parathyroid adenoma. J Oral Maxillofac Surg 2004; 62: 1024-8.
  2. Gupta A, Horattas MC, Moattari AR, Shorten SD. Disseminated brown’s tumor from hyperparathyroidism masquerading as metastatic cancer: a complication of parathyroid carcinoma. Am Surg 2001;67(10):951–5.
  3. Jebasingh F, Jacob JJ, Shah A, Paul TV, Seshadri MS: Bilateral maxillary brown as the first presentation of primary hyperparathyroidism. Oral Maxillofac Surg 2008; 12:97-100.
  4. Cebesoy O, Karakok M, Arpacioglu D, Baltaci ET. Brown tumor with atypical localization in a normocalcemic patient. Arch Orthop Trauma Surg 2007;127:577-580.
  5. Keyser JS, Postma GN. Brown tumor of the mandible. Am J Oto-laryngol 1996;17(6):407–10.
  6. Fitzgerald P: Endocrinology. In Current Medical Diagnosis & Treatment. 39th edition. Edited by Tierney LM, McPhee SJ, Papadakis MA. Stamford, CT: Appleton & Lange; 2000:1118-1121.
  7. Blinder G, Hiller N, Gatt N, Matas M, Shilo S. Brown tumor in the cricoid cartilage: an unusual manifestation of primary hyperparathyroidism. Ann Otol Rhinol Laryngol 1997;106(3):252–3.
  8. Frame B, Foroozanfar F, Patton RB. Normocalcemic primary hyperparathyroidism with Osteitis Fibrosa. Ann Intern Med 1970;73(2):253-7.
  9. Emin AH, Suoglu Y, Demir D, Karatay MC. Normocalcemic hyperparathyroidism presented with mandibular brown tumor: report of a case. Auris Nasus Larynx 2004;31:299-304.
  10. Er N, Adiloğlu S, Acar G. An unusual case report: normocalcemic markers and their relationship with multiple sclerosis in primary hyperparathyroidism disease revealed by radiological markers with the diagnosis of brown tumor. Egyptian Journal of Radiology and Nuclear Medicine. 2022 Dec;53(1): 1-7.
  11. Sicard A. Surgical therapy of parathyroid tumor comprehensive management of head and neck tumor, vol. 2. Philadelphia: Thawley; 1987. p.1661–7.
  12. Al-Gahtany M, Cusimano M, Singer W, Bilbao J, Kovacs K, Marotta T. Brown tumors of the skull base: case report and review of the literature. J Neurosurg 2003; 98:417-420.