title: Brown tumour in a patient with secondary hyperparathyroidism resistant to medical therapy: case report on successful treatment after subtotal parathyroidectomy.
abstract: Brown tumour represents a serious complication of hyperparathyroidism. Differential diagnosis, based on histological examination, is only presumptive and clinical, radiological and laboratory data are necessary for definitive diagnosis. Here we describe a case of a brown tumour localised in the maxilla due to secondary hyperparathyroidism in a young women with chronic renal failure. Hemodialysis and pharmacological treatment were unsuccessful in controlling secondary hyperparathyroidism making it necessary to proceed with a subtotal parathyroidectomy. The proper timing of the parathyroidectomy and its favourable effect on regression of the brown tumor made it possible to avoid a potentially disfiguring surgical removal of the brown tumor.
authors.affiliation: Department of Internal Medicine, Tor Vergata University, Viale Oxford 81, 00133 Rome, Italy.
authors.forename: Nicola
authors.initials: N
authors.lastname: Di Daniele
authors.forename: Stefano
authors.initials: S
authors.lastname: Condò
authors.forename: Michele
authors.initials: M
authors.lastname: Ferrannini
authors.forename: Marta
authors.initials: M
authors.lastname: Bertoli
authors.forename: Valentina
authors.initials: V
authors.lastname: Rovella
authors.forename: Laura
authors.initials: L
authors.lastname: Di Renzo
authors.forename: Antonino
authors.initials: A
authors.lastname: De Lorenzo