The aim was to report on a case of ossifying fibroma, consisting of a benign fibro-osseous lesion characterized by slow growth and proliferation of fibrous cellular tissue, bone, cement or a combination.A 29-year-old male patient was attended at a hospital, after he had suffered a car accident. During the clinical examination, increased volume in the region of the right side of the mandible was observed, and a fracture in the middle third of the face was suspected. The tomographic examination showed an image suggestive of fracturing of the left-side zygomatic complex, without displacement, and with a well-delimited radiopaque image of the mandible. The patient was sent to a hospital where panoramic radiography, posteroanterior radiography of the face and teleradiography were performed in order to better document the case. An incisional biopsy was performed. Histopathological examination showed the presence of a benign bone lesion suggestive of ossifying fibroma. Surgery was performed in order to completely remove the lesion, with fixation using a reconstruction plate. A new anatomopathological examination confirmed the diagnosis.

The best-known cervicopharyngeal pain is Eagle syndrome, in which symptomatic elongation of the stylomandibular process occurs and may be accompanied by stylohyoid ligament calcification. Among the causes of elongation of the styloid process, the following may be mentioned: history of trauma, styloid ligament calcification, and formation of bony tissue in the insertion of the styloid ligament. When there is no history of trauma or surgery, it is called the stylohyoid syndrome. In the current study, the clinical case of 34-year-old woman is reported, complaining of pain in the region of the neck, without any history of neck surgery or trauma. A panoramic radiograph and computed tomographic scan showed bilateral elongation of the styloid process. Extraoral surgical intervention was the treatment of choice. It is important to point out that dentists should be aware of this condition to contribute to a better diagnosis and therapeutic procedure.

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ResumoO Lúpus Eritematoso Sistêmico (LES) é uma doença multissistêmica de origem autoimune. A apresentação clínica é variável e a evolução costuma ser crônica, com períodos de exacerbação e remissão. As lesões mais características decorrem de imunocomplexos depositados nos vasos, rins, tecido conjuntivo e pele, mas também podem ocorrer manifestações neurológicas, as quais são mais raras e de difícil diagnóstico. Quando há acometimento do sistema nervoso central, podem ocorrer sintomas como disfunção cognitiva, cefaleia, convulsão, neuropatia periférica e alterações visuais. O fatorantinuclear (FAN), por sua vez, é um dos principais exames laboratoriais usados para o diagnóstico de LES, já que ele é detectado em mais de 95% dos casos. Em raros casos de LES que apresentam FAN negativo com nefrite, a biópsia renal é necessária porque, além de estabelecer a classificação histológica, contribui para o prognóstico e tratamento, já que exclui outras hipóteses diagnósticas. O presente trabalho tem como objetivo relatar o caso de uma paciente feminina de 23 anos, previamente hígida, internada em uma Unidade de Terapia Intensiva (UTI) com manifestações neurológicas graves (catastrófica) associadas a comprometimento renal com resultado de FAN negativo e diagnóstico de LES estabelecido após a realização de biópsia renal, através do anatomopatológico e principalmente através da imunofluorescência.