eng Science and Education Publishing American Journal of Medical Case Reports 2014-10-29 2 11 240 242 10.12691/ajmcr-2-11-4 AJMCR20142114 article Btissaam. Belhoucha btissambelhoucha@gmail.com 1 Hiroual abelatif 2 Hassan. Nouri 2 Youssef. Rochdi 2 Bouaichi amine 2 lahcen. Aderdour 2 N. Mansouri Hattab 2 Abdelaziz. Raji 2 Department of ENT, CHU Med VI, Marrakech, Morocco Department of Maxillo-facial surgery, CHU Med VI, Marrakech, Morocco Brown tumor represents a serious and late bony complications of advanced hyperparathyroidism with a frequency of 1.5-1.75 percent in secondary hyperparathyroidism and 3�C4 percent in primary hyperparathyroidism. Here we describe an extremely rare case of a 19-year-old male patient with a brown tumor localised in the maxilla and mandibular due to secondary hyperparathyroidism compromising mastication, phonation and social ease of the patient. An early diagnosis and a timely parathyroidectomy in a medically resistant hyperparathyroidism are an optimal option to control the growth of the bony lesion http://pubs.sciepub.com/ajmcr/2/11/4/ajmcr-2-11-4.pdf secondary hyperparathyroidism; renal osteodystrophy; maxillary and mandibular brown tumors