Parathyroid Adenoma Presenting as a Brown Tumour of the Mandible

Abstract EN

Background.

Parathyroid adenoma is the commonest cause of primary hypercalcaemia and usually presents with symptoms/signs of hypercalcaemia.

This paper highlights an unusual presentation.

Case Report.

A 27-year-old female presented with a painful left mandibular swelling, suspicious of neoplasia.

A computed tomography (CT) guided biopsy was performed.

Based on the histology result, serum calcium was carried out, confirming hypercalcaemia.

A left inferior parathyroid adenoma was subsequently removed.

CT mandible showed extensive erosive lesions at the left 2nd/3rd inferior molar roots with protrusion to adjacent soft tissues.

USS revealed a hypoechoic lesion on the left inferior parathyroid gland.

Sestamibi scan showed a focus of MIBI uptake and retention at the inferior aspect of the left thyroid lobe.

Conclusion.

This case highlights the importance of a thorough history and examination.

Clinicians should always bear in mind atypical presentations of parathyroid adenomas, with the need to exclude this differential in the presence of hypercalcaemia.