title: Normocalcemic hyperparathyroidism presented with mandibular brown tumor: report of a case.
abstract: Brown tumor is a rare clinical entity complicating hyperparathyroidism. It may occur in the head and neck, with the mandible being the most frequent site. Hyperparathyroidism is usually associated with hypercalcemia. We report a case of madibular Brown tumor secondary to primary hyperparathyroidism. In this case in spite of hyperparathyroidism and the bony lesion the serum calcium level was within normal range. The case managed by surgical excision of the mandibular tumor with an en-bloc hemithyroidectomy with inclusion of the diseased parathyroid gland. This case demonstrates that in osteolytic bony lesions a hyperparathyroid complication can be expected even with normal serum calcium level. The presence of normocalcemia in primary hyperparathyroidism should prompt the physician to look for vitamin D deficiency.
authors.affiliation: Department of ORL, Faculty of Medicine, Capa-Istanbul, Turkey. abdulxaliq@hotmail.com
authors.forename: A Haluk
authors.initials: AH
authors.lastname: Emin
authors.forename: Yusufhan
authors.initials: Y
authors.lastname: Süoğlu
authors.forename: Deniz
authors.initials: D
authors.lastname: Demir
authors.forename: Mesut Can
authors.initials: MC
authors.lastname: Karatay
mesh_terms: D001707:Biopsy, Needle; D002118:Calcium / Q000097:blood / Q000378:metabolism*; D005260:Female; D006801:Humans; D006961:Hyperparathyroidism / Q000150:complications* / Q000175:diagnosis / Q000378:metabolism*; D008279:Magnetic Resonance Imaging; D008336:Mandibular Diseases / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D008875:Middle Aged; D009626:Terminology as Topic; D014057:Tomography, X-Ray Computed
chemical_list: D002118:Calcium