RESUMO
Stafne's bone cavity (SBC) is an asymptomatic lingual bone cavity situated near the angle of the mandible. The anterior variant of SBC, which shows a radiolucent unilateral ovoid lingual bone concavity in the canine-premolar mandibular region, is uncommon. A 73-year-old man was referred for assessment of loss of mandibular bone. Panoramic radiographs and computerized tomography scans showed a well-defined lingual bony defect in the anterior mandible. Analysis of imaginological documentation, made 14 years ago, revealed a progressive increase in mesiodistal diameter and intraosseous bony defect. The soft tissue obtained within the bony defect, microscopically revealed fibrous stroma containing blood vessels of varied caliber. The current anterior lingual mandibular bone defect case is probably caused by the salivary gland entrapped or pressure resorption, which can explain the SBC pathogenesis (AU)
A cavidade óssea de Stafne (COS) é uma cavidade assintomática, localizada próximo ao ângulo da mandíbula, por lingual. A variante anterior da COS, a qual apresenta uma concavidade óssea lingual radiolúcida, ovoide e unilateral na região do caninopré-molar mandibular, é incomum. Um homem de 73 anos foi encaminhado para avaliação da perda óssea mandibular. A radiografia panorâmica e a tomografia computadorizada mostraram um defeito ósseo lingual bem definido na região anterior da mandibula. A análise da documentação imaginológica, realizada há 14 anos, revelou um aumento progressivo do diâmetro mesiodistal e defeito ósseo intraósseo. A biópsia do tecido mole obtido do defeito ósseo revelou microscópicamente estroma fibroso contendo vasos sanguíneos de calibre variado. O presente caso de defeito ósseo mandibular na região lingual anterior é provavelmente causado por glândula salivar aprisionada ou reabsorção por pressão, o que pode explicar a patogênese da COS. (AU)
Assuntos
Humanos , Masculino , Idoso , Perda do Osso Alveolar , Diagnóstico , Tomografia Computadorizada de Feixe Cônico , Mandíbula , BocaRESUMO
Osteomas are benign osteogenic lesions that result from the proliferation of mature bone. Three variants are known: central, peripheral, and extraskeletal. The peripheral variant is the most common and it most frequently affects the paranasal sinuses, rarely occurring in the jaws. This article describes the case of a 33-year-old white male patient who was referred complaining of facial asymmetry. Clinical examination revealed an increase in volume at the base of the right side of the mandible, hard bony consistency and well delimited, painless to the touch, without signs of infection or intraoral alterations. Radiographic examination revealed an oval lobulated, radiopaque sessile lesion adhered to the mandibular base near the insertion of the masseter muscle. The patient reported practicing martial arts many years ago. Owing to the limited access, it was decided to perform the complete lesion removal through an extraoral surgical approach, by using a skin crease in the upper neck region below the lesion. The patient recovered well and the histopathological analysis confirmed the diagnosis of osteoma. The etiopathogenesis of osteoma is not completely elucidated, and 3 theories are more accepted: developmental defect, neoplastic nature, and reactive lesion owing to trauma or local infection. The clinicopathological correlation in the present case supports a traumatic origin. Traumatic peripheral osteoma should be considered in the differential diagnosis of nodular bone-forming lesions affecting the mandible.
