This journal only 2019, Number 3 Rev Mex Cir Bucal Maxilofac 2019; 15 (3) Right subcutaneous osteoblastoma: report of a pediatric case associated with facial trauma González SMJ, Alatorre PS, Macías DDM, Sarmiento RLD, Ayón SAG, Fuentes AJV Full text How to cite this article Language: Spanish References: 18 Page: 103-109 PDF size: 253.74 Kb. Key words: Osteoblastoma, benign neoplasm, subcondilary region, pediatric patient, facial trauma. ABSTRACT We present the case of an 8-year-old male with osteoblastoma in the right side subcondylar region, associated with facial trauma. The patient had a trauma antecedent in the mental region at the age of three years, without presenting symptoms. Five years later, he started with limitation and deviation of the buccal opening to the left side, swelling and preauricular pain in the right side. Initially, he was treated as an soft tissues abscess, just with antibiotic therapy without improvement in symptoms. He is referred to Oral and Maxillofacial Surgery Service in Centenario Miguel Hidalgo Hospital for a clinical examination. At the beginning, computed tomography and 3D reconstruction findings showed hyperdense lesion in the subcondylar region and posterior ramus of the right side, multilobulated, which contacts the anterior wall of the external canal. Surgical excision was performed under general anesthesia and sent to histopathological examination, which confirm benign osteoblastoma. Three weeks after, no recurrence of the osteoblastoma is observed in cone beam tomography, and total resection of the lesion was shown. Clinically, no limitation of buccal opening and slight mandibular deviation to the left side. The present case, shows the probable association of traumatisms as an etiological factor in the development of osteoblastomas in the subcondylar region. REFERENCES Miyajima D, Ishikawa A, Yagihara K, hiIshida T, Yagishita H, Kasturano M et al. A rare case of osteoblastoma of the mandible. J Oral Maxillofac Surg Med Pathol. 2015; 27 (6): 884-887. Woźniak AW, Nowaczyk MT, Osmola K, Golusinski W. Malignant transformation of an osteoblastoma of the mandible: case report and review of the literature. Eur Arch Otorhinolaryngol. 2010; 267 (6): 845-849. Jones AC, Prihoda TJ, Kacher JE, Odingo NA, Freedman PD. Osteoblastoma of the maxilla and mandible: a report of 24 cases, review of the literature, and discussion of its relationship to osteoid osteoma of the jaws. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2006; 102 (5): 639-650. Manjunatha BS, Sunit P, Amit M, Sanjiv S. Osteoblastoma of the jaws: report of a case and review of literature. Clin Pract. 2011; 1 (4): e118. Yalcinkaya U, Doganavsargil B, Sezak M, Kececi B, Argin M, Basdemir G et al. Clinical and morphological characteristics of osteoid osteoma and osteoblastoma: a retrospective single-center analysis of 204 patients. Ann Diagn Pathol. 2014; 18 (6): 319-325. Neville BW, Damm DD, Allen CM, Chi AC. Oral and maxillofacial pathology. 4th ed. Elsevier Inc.; 2016. Jaffe HL, Mayer L. An osteoblastic osteoid tissue–forming tumor of a metacarpal bone. Arch Surg. 1932; 24: 550-564. Jaffe HL. “Osteoid-osteoma.” A benign osteoblastic tumor com- posed of osteoid and atypical bone. Arch Surg. 1935; 31: 709-728. Fletcher CDM, Bridge JA, Hogendoorn P, Mertens F. Osteoid osteoma and osteoblastoma in World Health Organization classification of tumours of soft tissue and bone. 4th ed. Lyon: IARC; 2013. pp. 277-280. Dorfman HD, Czerniak B. Bone tumors. St Louis: Mosby; 1998. pp. 85-114. Byers PD. Solitary benign osteoblastic lesions of bone. Osteoid osteoma and benign osteoblastoma. Cancer. 1968; 22 (1): 43-57. Jaffe HL. Benign osteoblastoma. Bull Hosp Joint Dis. 1956; 17 (2): 141-151. Lichtenstein L. Benign osteoblastoma; a category of osteoid- and bone-forming tumors other than classical osteoid osteoma, which may be mistaken for giant-cell tumor or osteogenic sarcoma. Cancer. 1956; 9 (5): 1044-1052. Smith NH. Benign osteoblastoma of the mandible: report of case. J Oral Surg. 1972; 30 (4): 288-292. Miller AS, Rambo HM, Bowser MW, Gross M. Benign osteoblastoma of the jaws: report of three cases. J Oral Surg. 1980; 38 (9): 694-697. Temple HT, Mizel MS, Murphey MD, Sweet DE. Osteoblastoma of the foot and ankle. Foot Ankle Int. 1998; 19 (10): 698-704. Gordon SC, MacIntosh RB, Wesley RK. A review of osteoblastoma and case report of metachronous osteoblastoma and unicystic ameloblastoma. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2001; 91 (5): 570-575. Sherman MS, McFarland Jr G. Mechanism of pain in osteoid osteoma. South Med J. 1965; 58: 163-166.