title: Unusually rapid growth of brown tumour in the mandible after parathyroidectomy associated with the presence of a supernumerary parathyroid gland.
abstract: The aim of this study is to report the case of a quick growing brown tumour in the jaw after a parathyroidectomy due to the presence of a rare fifth parathyroid gland. The patient had chronic renal disease and the diagnosis was tertiary hyperparathyroidism. Thirty days after the parathyroidectomy, the patient returned with a significant increase in the tumour size. The suspicion of a supernumerary gland was confirmed by parathyroid scintigraphy. The treatment of brown tumour is dependent on the treatment of the hyperparathyroidism. However, curettage should be considered if a large lesion is disturbing mastication. In conclusion, this case should attract the attention of general practitioner dentists, since they may be the first professionals who have contact with the patient with a brown tumour in the jaws. Likewise, this case emphasises the importance of knowing the type of hyperparathyroidism involved to allow for effective treatment planning.
authors.affiliation: Department of Diagnosis and Surgery, São Paulo State University-UNESP, Humaitá 1680, 14801-903 Araraquara, SP, Brazil. erica.fobusp@yahoo.com.br
authors.forename: Érica
authors.initials: É
authors.lastname: Dorigatti de Ávila
authors.forename: Rafael Scaf
authors.initials: RS
authors.lastname: de Molon
authors.forename: Marisa Aparecida
authors.initials: MA
authors.lastname: Cabrini Gabrielli
authors.forename: Eduardo
authors.initials: E
authors.lastname: Hochuli-Vieira
authors.forename: Elaine Maria
authors.initials: EM
authors.lastname: Sgavioli Massucato
authors.forename: Francisco Veríssimo
authors.initials: FV
authors.lastname: de Mello-Filho
authors.forename: Luis Carlos
authors.initials: LC
authors.lastname: Conti
authors.forename: Mário Francisco
authors.initials: MF
authors.lastname: Real Gabrielli
mesh_terms: D006101:Granuloma, Giant Cell / Q000209:etiology / Q000601:surgery; D006801:Humans; D006962:Hyperparathyroidism, Secondary / Q000209:etiology* / Q000601:surgery; D008297:Male; D008336:Mandibular Diseases / Q000209:etiology* / Q000601:surgery; D010002:Osteitis Fibrosa Cystica / Q000209:etiology* / Q000601:surgery; D010280:Parathyroid Glands / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D016105:Parathyroidectomy; D011183:Postoperative Complications; D011877:Radionuclide Imaging; D051436:Renal Insufficiency, Chronic / Q000150:complications; D055815:Young Adult