Osteoma trabecular: relato de caso

Introduction: Osteoma is a benign neoplasm, slow growing, and usually asymptomatic, composed of mature bone which can be dense and/or cancellous often affecting the gnathic bones. Objective: Report a case of trabecular osteoma which occurred in lower left first molar edentulous region of female patient, feoderma, 36-years-old. About 3 years ago tooth was extracted because of caries and no rehabilitation treatment was performed. Materials and methods: after clinical and tomographic exam it was observed in edentulous region in body of mandible a hyperdense image, well circumscribed, measuring about 5 cm in its greatest dimension, surrounded by hypodense area. The correlation of all the exams conducts to osteoma, osteoblastoma and complex odontome as diagnostic hypotheses. Excisional biopsy and histopathological analysis confirmed diagnosis of osteoma. Results: correlating clinical, imagenological and histopathologic findings a final diagnosis of osteoma trabecular. Conclusion: complete lesion excision was important for diagnostic clarification and represented its treatment, being rare recurrences.