Epithelial-myoepithelial carcinoma was first described by Danath et al. in 1972 and is classified as a rare low-grade biphasic neoplasm of the salivary glands. This case report presents a male patient who had a lesion in the oral mucosa with a history of recurrence of the tumor. The outcome resulted in a profile consistent with an epithelial-myoepithelial carcinoma with a high degree of transformation. The case highlights the importance of histopathological evaluation of oral lesions, which occasionally may not present typical clinical aspects of malignant lesion.

Introduction: Maxillofacial trauma (MFT) due to road traffic accidents are responsible for part of care provided at trauma centers.Purpose: This research aimed to analyze the pattern of MFTs and associated factors in victims of road traffic accidents. Methods: A total of 873 medical records of patients with MFTs in 2 reference hospitals for trauma in Northeastern Brazil during the period from January 2011 to December 2018 were analyzed. Data were included in the Tweedie multiple regression analysis to estimate the prevalence ratio (PR), with 95% confidence interval ( 95% CI) and P < 0.05. Results: Motorcycle accidents were the most prevalent (76.4%). Higher hospital costs were the result of patients victims of motorcycle accidents (PR ¼ 1.56; 95% CI ¼ 1.29-1.88; P < 0.001), diagnosed with mandible fracture (PR ¼ 1.41; 95% CI ¼ 1.07-1.86; P ¼ 0.001) who had consumed alcoholic beverages (PR ¼ 1.12; 95% CI ¼ 1.00-1.25; P ¼ 0.04) and did not use personal protective equipment (PPE) (PR ¼ 1.29; 95% CI ¼ 1.10-1.50; P ¼ 0.001). Patients victims of motorcycle accidents remained in hospital longer than other etiologies (PR ¼ 1.47; 95% CI ¼ 1.23-1.76; P < 0.001). The consumption of alcoholic beverages resulted in more severe MFTs (PR ¼ 2.05; 95% CI ¼ 1.34-3.14; P ¼ 0.001). Conclusion: Victims of motorcycle accidents remained hospitalized longer and resulted in higher hospital costs compared to other etiologies. Alcohol consumption increases hospital costs and the severity of MFTs. Higher hospital costs were also observed in patients who did not use PPE. Strategies need to be adopted to understand associated factors in MFTs such as the reallocation of resources to fund, implement and improve services and the surveillance in roads and highways, as well as prevention programs aimed at this health problem.

Background/Aims: Oral and maxillofacial trauma (OMFT) is a public health problem due to its high occurrence and demand for resources for its management and the financial and social impact of OMFT victims on the health system. The aim of this study was to conduct an 8-year prospective analysis of OMFT cases from an emergency service. Materials and Methods: A hospital-based 8-year prospective study on OMFT and associated factors was performed on data from December 2011 to December 2019. Data regarding sociodemographic (gender, age, and skin color) and socio-economic profiles (educational level, family income, and occupation), OMFT profile (etiology, OMFT type, and treatment), associated factors [alcohol consumption and personal protective equipment (PPE) use], OMFT occurrence (injury day and hour), length of hospital stay, and cost were collected. Descriptive and inferential analyses of data were performed.Results: Most OMFT cases involved men with low schooling and family income, resulting from traffic accidents. OMFT severity was associated with longer hospital stay, higher hospital costs and nonuse of PPE, midface fractures (mainly orbital-zygomatic fractures), closed reduction, and open reduction/internal fixation. Traffic accidents were the main cause of longer hospital stays for victims aged 41-60 years with better socio-economic status compared with cases that had higher hospital costs. In general, higher hospital costs were associated with victims of violence under 40 years of age, with low schooling and farmers. Alcohol consumption and non-use of PPE also contributed to increasing the length of hospital stay. Conclusion:Oral and maxillofacial trauma severity was associated with longer hospital stay and higher hospital costs. Associated factors such as alcohol consumption and non-use of PPE contributed to increase the length of hospital stay and OMFT severity.

Objective: This article describes a case of a Peripheral Giant Cell Granuloma (PGCG) in a girl. Introduction: PGCG is a relatively infrequent benign reactive lesion of the gingiva or alveolar ridge that develops in response to local irritation. Clinical appearance consists of a firm or soft smooth surface nodule in dissimilar colors of varying size with sessile or pedunculated implantation base. Radiographic features are generally nonspecific, thereby definitive diagnosis depends on microscopic examination to confirm the entity of PGCG. Case Report: A 6-year-old female patient was referred to the outpatient clinic of an Oral & Maxillofacial Surgery Department with the chief complaint of an intraoral swelling. The intraoral examination showed a painless sessile mass with exophytic growth similar to a tumorous lesion located on the mandibular alveolar ridge extending from distal aspect of right mandibular primary canine to mesial aspect of first permanent molar of the same side. Conclusion: Peripheral giant cell granuloma is a relatively uncommon lesion in children and potential for collaboration with the treatment in young patients should be considered for a successful therapeutic approach.

REsUMo introdução: O cisto periodontal lateral (CPL) é um cisto odontogênico de desenvolvimento incomum. Essa lesão acomete predominantemente a mandíbula, e é comumente observada lateralmente à raiz de um dente vital. Em raros casos, essa lesão pode permanecer mesmo após a exodontia do dente associado e se assemelhar, radiograficamente, a um cisto residual. objetivo: Relatar um caso incomum de CPL em maxila que mimetizava, radiograficamente, um cisto residual. Além disso, serão abordadas suas características clínico-patológicas, diagnóstico diferencial e terapêutica para essa lesão. Relato do caso: Paciente de 76 anos de idade apresentava uma lesão nodular na região palatina de rebordo alveolar, na área correspondente aos dentes 13 e 14. O exame radiográfico da região afetada demonstrou uma imagem radiolúcida unilocular e bem delimitada. Sob a hipótese diagnóstica de cisto residual, procedeu-se à enucleação da lesão. Após a análise histopatológica, os achados microscópicos foram compatíveis com CPL. Quatorze meses após a remoção cirúrgica da lesão, sinais clínicos ou radiográficos de recidiva não foram constatados. Conclusão: Em virtude da possibilidade do CPL permanecer mesmo após a exodontia do dente associado e se assemelhar, radiograficamente, a um cisto residual, o diagnóstico dessa lesão deve ser baseado nos achados histopatológicos e menor importância deve ser dada à sua localização adjacente ou lateral à raiz de um dente vital. Palavras-chave: Cistos odontogênicos; cisto periodontal; cistos maxilomandibulares; diagnóstico diferencial; radiografia. aBsTRaCT introduction: The lateral periodontal cyst (LPC) is an uncommon developmental odontogenic cyst. This lesion affects mainly the mandible and is commonly seen laterally to the root of a vital tooth. In rare cases, this lesion may remain even after extraction of the associated tooth and resemble a residual cyst in radiographic exams. objective: To report a case of LPC in maxilla that mimicked radiographically a residual cyst. In addition, it will also be discussed clinicopathologic features, differential diagnosis, and treatment for this lesion. Case report: A 76-year-old patient presented with a nodular lesion in the palate region of the alveolar ridge, in the area