Oral granular cell tumor: a collaborative clinicopathological study of 61 cases.

BACKGROUND: Granular Cell Tumor (GCT) is an uncommon benign lesion in the oral cavity whose pathogenesis remains poorly understood. Due to their infrequent occurrence and similarity to other oral lesions, they are often forgotten during the initial clinical diagnosis. Therefore, understanding its prevalence, clinical and pathological characteristics is crucial for an accurate diagnosis and adequate management. METHODS: All cases diagnosed as GCTs in six Brazilian and Argentinian oral diagnostic centers were re-evaluated by HE staining, and clinical, demographic, and histopathological data were collected and evaluated. RESULTS: The series comprised 45 female (73.8%) and 16 male (26.2%), with a 2.8:1 female-to-male ratio and a mean age of 35.3 ± 16.9 years (range: 7-77 years). Most cases occurred on the tongue (n = 49; 81.6%) and presented clinically as asymptomatic papules or nodules (n = 50; 89.3%) with a normochromic (n = 25; 45.5%) or yellowish (n = 11; 20.0%) coloration and sizes ranging from 0.2 to 3.0 cm (mean ± SD: 1.40 ± 0.75 cm). Morphologically, most tumors were characterized by a poorly delimited proliferation (n = 52; 88.1%) of cells typically rounded to polygonal containing abundant, eosinophilic, finely granular cytoplasm. Pustulo-ovoid bodies of Milian were identified in all lesions (n = 61; 100%). Entrapment of skeletal striated muscle (n = 44; 72.1%) and nerve fibers (n = 42; 68.9%) were common findings. Pseudoepitheliomatous hyperplasia (PEH) was observed in 23 cases (39.0%). In only 27.7% of cases (n = 13) there was agreement between the clinical and histopathological diagnosis. Outcome information was available from 16 patients (26.2%), with clinical follow-up ranging from 4 to 36 months (mean 13.3 months), and none developed local recurrence. CONCLUSIONS: The clinical and histopathological features of GCTs were consistent with those described in previous studies. In general, these lesions have a predilection for the lateral region of the tongue in adult women. It is essential to consider GCTs in the differential diagnosis of yellow or normochromic papules and nodules in the oral cavity. Histopathological evaluation is essential for the definitive diagnosis and the prognosis is excellent.

Clinicopathologic and imaging features of odontogenic myxomas: a multi-institutional study.

PURPOSE: This study aims to report clinicopathologic and imaging features of odontogenic myxomas (OM), highlighting uncommon findings. METHODS: Clinicopathologic and imaging data of OMs diagnosed in the five Brazilian diagnostic pathology centers were collected and analyzed. RESULTS: The series comprised 42 females (68.9%) and 19 males (31.1%), with a 2.2:1 female-to-male ratio and a mean age of 34.5±15.4 years (range: 4-80). Clinically, most OMs presented as painless intraoral swelling (n = 36; 70.6%) in the mandible (n=37; 59.7%). Multilocular lesions (n=30; 83.3%) were more common than unilocular lesions (n=6; 16.7%). There was no statistically significant difference between the average size of unilocular and multilocular OMs (p=0.2431). The borders of OMs were mainly well-defined (n=24; 66.7%) with different degrees of cortication. Only seven tumors caused tooth resorption (15.9%), while 24 (54.5%) caused tooth displacement. Cortical bone perforation was observed in 12 (38.7%) cases. Morphologically, OMs were characterized mainly by stellate or spindle-shaped cells in a myxoid background (n=53; 85.5%). Surgical resection was the most common treatment modality (n=15; 65.2%), followed by conservative surgery (n=8; 34.8%). Outcomes were available in 20 cases (32.3%). Seven of these patients had local recurrence (35%). Enucleation was the treatment with the highest recurrence rate (4/7; 57.1%). CONCLUSIONS: OM has a predilection for the posterior region of the jaws of female adults. Despite their bland morphological appearance, they displayed diverse imaging features. Clinicians must include the OM in the differential diagnosis of osteolytic lesions of the jaws. A long follow-up is needed to monitor possible recurrences.

A retrospective multicenter study of oral and maxillofacial lesions in older people.

Few studies on the distribution of oral diseases in older people are available in the literature. This study aimed to investigate the prevalence and demographic characteristics of oral and maxillofacial lesions in geriatric patients (age ≥ 60 years). A retrospective descriptive cross-sectional study was performed. Biopsy records were obtained from archives of three Brazilian oral pathology centers over a 20-year period. Data on sex, age, anatomical site, skin color, and histopathological diagnosis were collected and analyzed. Pearson's chi-square test was used to evaluate differences in the frequency of the different oral and maxillofacial lesion groups. A total of 7,476 biopsy records of older patients were analyzed. Most cases were diagnosed in patients aged 60 to 69 years (n = 4,487; 60.0%). Females were more affected (n = 4,403; 58.9%) with a female-to-male ratio of 1:0.7 (p < 0.001). The tongue (n = 1,196; 16.4%), lower lip (n = 1,005; 13.8%), and buccal mucosa (n = 997; 13.7%) were the most common anatomical sites. Reactive and inflammatory lesions (n = 3,840; 51.3%) were the most prevalent non-neoplastic pathologies (p < 0.001), followed by cysts (n = 475; 6.4%). Malignant neoplasms were more frequent (n = 1,353; 18.1%) than benign neoplasms (n = 512; 6.8%). Fibrous/fibroepithelial hyperplasia (n = 2,042; 53.2%) (p < 0.001) and squamous cell carcinoma (n = 1,191; 88.03%) (p < 0.001) were the most common oral lesions in older adults. Biopsy data allow the accurate characterization of the prevalence of oral and maxillofacial lesions, supporting the development of public health policies that can enable the prevention, early diagnosis, and appropriate treatment of these lesions. Also, they bring valuable information that helps dentists and geriatricians diagnose these diseases.

Clinicopathologic analysis of oral dermoid and epidermoid cysts: a Brazilian multicenter study.

Dermoid cysts (DCs) and epidermoid cysts (ECs) are uncommon developmental cysts affecting the oral cavity. This study aims to evaluate patients with oral DCs and ECs and their demographic and clinicopathologic features. A retrospective descriptive cross-sectional study was performed. A total of 105,077 biopsy records of oral and maxillofacial lesions from seven Brazilian oral pathology centers were analyzed. All cases diagnosed as oral DCs and ECs were reviewed, and clinical, demographic, and histopathological data were collected. The series comprised 32 DCs (31.4%) and 70 ECs (68.6%). Most of the DCs occurred on the floor of the mouth (n = 14; 45.2%) of women (n = 17; 53.1%) with a mean age of 34.6 ± 21.6 years. All DCs were lined partially or entirely by stratified squamous epithelium (100%). Chronic inflammatory cells, melanin pigmentation, multinucleated giant cell reaction, and cholesterol clefts were observed in the fibrous capsule . Most of the ECs affected the labial mucosa (n = 20; 31.7%) of men (n = 39; 56.5%) with a mean age of 48.0±19.8 years. Microscopically, most ECs (n = 68; 97.1%) were lined entirely by stratified squamous epithelium. Two cysts (2.9%) showed areas of respiratory metaplasia. Chronic inflammatory cells, melanin pigmentation, multinucleated giant cell reaction, and cholesterol clefts were also observed in the fibrous capsule. Conservative surgical excision was the treatment of choice in all cases. Oral DCs and ECs are uncommon and often clinically misdiagnosed lesions. Clinicians should consider DCs and ECs in the differential diagnosis of soft tissue lesions in the oral cavity, mainly located on the floor of the mouth and labial mucosa.

Oral solitary fibrous tumors: A collaborative clinicopathologic study of 19 cases.

OBJECTIVE: To report the clinicopathologic features of 19 oral solitary fibrous tumors (SFTs). METHODS: Clinical data were collected from the records of seven pathology services. All cases were re-evaluated by HE staining and confirmed by immunohistochemistry. RESULTS: The series comprised 11 females (57.9%) and 8 males (42.1%), with a mean age of 47.3 ± 14.7 years (range: 22-71 years) and a 1.3:1 female-to-male ratio. Most tumors affected the buccal mucosa (n = 7; 36.8%) and presented clinically as an asymptomatic solitary submucosal well-circumscribed nodule with coloration similar to the oral mucosa. Morphologically, most SFTs (n = 10; 52.6%) exhibited a classic hybrid pattern characterized by a well-circumscribed proliferation of densely cellular areas alternating with hypocellular areas in a variably collagenous vascular stroma. Remnants of accessory salivary glands were observed in two cases (n = 2; 10.5%). All tumors were positive for STAT6 and CD34 (n = 19; 100%). Outcome information was available from 6 patients (31.6%), with clinical follow-up ranging from 6 to 24 months (mean ± SD, 9.5 ± 6.8 months), and none developed local recurrence. CONCLUSIONS: Oral SFTs are rare and often clinically misdiagnosed. Pathologists should consider SFT in the differential diagnosis of oral spindle cell tumors. Accurate diagnosis requires careful morphological evaluation supported by immunohistochemical analysis.

Gingival rhabdomyosarcoma mimicking a non-neoplastic proliferative lesion: A diagnostic challenge.

Rhabdomyosarcoma (RMS) is a soft tissue sarcoma that develops from skeletal striated muscle cells. RMSs are exceedingly rare in the oral cavity, particularly in the gingiva. Herein, we reported the clinicopathological and immunohistochemical features of a rare case of RMS in a 30-year-old female presenting clinically as a painful polypoid nodule on the mandibular gingiva. Microscopically, the tumor showed atypical spindle cells with elongated nuclei and eosinophilic cytoplasm arranged in a fascicular pattern. In focal areas, the tumor cells exhibited rhabdomyoblastic differentiation. Immunohistochemistry showed strong positivity for desmin, myogenin (scattered cells), and MyoD1. The patient underwent surgical resection followed by postoperative complementary radio- and chemotherapy. However, the patient had a local recurrence seven months after the initial treatment. She was submitted to a total mandibulectomy associated with adjuvant radiotherapy. However, she died two months after reoperation due to complications secondary to radiation therapy. Because of the rarity in the oral cavity and non-specific signs and symptoms, the clinical diagnosis of RMS is difficult and often overlooked. Therefore, careful histopathological and immunohistochemistry analysis of these tumors is essential to correct diagnosis. Early surgical excision with tumor-free margins and prolonged follow-up are strongly recommended.

A retrospective multicenter study of oral and maxillofacial lesions in older people

Abstract Few studies on the distribution of oral diseases in older people are available in the literature. This study aimed to investigate the prevalence and demographic characteristics of oral and maxillofacial lesions in geriatric patients (age ≥ 60 years). A retrospective descriptive cross-sectional study was performed. Biopsy records were obtained from archives of three Brazilian oral pathology centers over a 20-year period. Data on sex, age, anatomical site, skin color, and histopathological diagnosis were collected and analyzed. Pearson's chi-square test was used to evaluate differences in the frequency of the different oral and maxillofacial lesion groups. A total of 7,476 biopsy records of older patients were analyzed. Most cases were diagnosed in patients aged 60 to 69 years (n = 4,487; 60.0%). Females were more affected (n = 4,403; 58.9%) with a female-to-male ratio of 1:0.7 (p < 0.001). The tongue (n = 1,196; 16.4%), lower lip (n = 1,005; 13.8%), and buccal mucosa (n = 997; 13.7%) were the most common anatomical sites. Reactive and inflammatory lesions (n = 3,840; 51.3%) were the most prevalent non-neoplastic pathologies (p < 0.001), followed by cysts (n = 475; 6.4%). Malignant neoplasms were more frequent (n = 1,353; 18.1%) than benign neoplasms (n = 512; 6.8%). Fibrous/fibroepithelial hyperplasia (n = 2,042; 53.2%) (p < 0.001) and squamous cell carcinoma (n = 1,191; 88.03%) (p < 0.001) were the most common oral lesions in older adults. Biopsy data allow the accurate characterization of the prevalence of oral and maxillofacial lesions, supporting the development of public health policies that can enable the prevention, early diagnosis, and appropriate treatment of these lesions. Also, they bring valuable information that helps dentists and geriatricians diagnose these diseases.

Clinicopathologic analysis of oral dermoid and epidermoid cysts: a Brazilian multicenter study

Abstract Dermoid cysts (DCs) and epidermoid cysts (ECs) are uncommon developmental cysts affecting the oral cavity. This study aims to evaluate patients with oral DCs and ECs and their demographic and clinicopathologic features. A retrospective descriptive cross-sectional study was performed. A total of 105,077 biopsy records of oral and maxillofacial lesions from seven Brazilian oral pathology centers were analyzed. All cases diagnosed as oral DCs and ECs were reviewed, and clinical, demographic, and histopathological data were collected. The series comprised 32 DCs (31.4%) and 70 ECs (68.6%). Most of the DCs occurred on the floor of the mouth (n = 14; 45.2%) of women (n = 17; 53.1%) with a mean age of 34.6 ± 21.6 years. All DCs were lined partially or entirely by stratified squamous epithelium (100%). Chronic inflammatory cells, melanin pigmentation, multinucleated giant cell reaction, and cholesterol clefts were observed in the fibrous capsule . Most of the ECs affected the labial mucosa (n = 20; 31.7%) of men (n = 39; 56.5%) with a mean age of 48.0±19.8 years. Microscopically, most ECs (n = 68; 97.1%) were lined entirely by stratified squamous epithelium. Two cysts (2.9%) showed areas of respiratory metaplasia. Chronic inflammatory cells, melanin pigmentation, multinucleated giant cell reaction, and cholesterol clefts were also observed in the fibrous capsule. Conservative surgical excision was the treatment of choice in all cases. Oral DCs and ECs are uncommon and often clinically misdiagnosed lesions. Clinicians should consider DCs and ECs in the differential diagnosis of soft tissue lesions in the oral cavity, mainly located on the floor of the mouth and labial mucosa.

Peripheral ossifying fibroma on the mandible: report of atypical presentation case / Fibroma ossificante periférico na mandíbula: relato de caso atípico

ABSTRACT Peripheral ossifying fibroma (POF) is a benign lesion, nodular, firm on palpation; the base is sessile or pedunculated; similar in color to the mucosa and epithelium; it may be preserved or ulcerated. It is prevalent in female and exclusively affects the gingiva. It is usually associated with irritating factors such as caries, dental plaque, among others. The objective of the present study is to report the case of a 27-years-old female patient, presenting a lesion in the mandible, complaining of an increased volume. Surgical excision was the treatment of choice. The patient is 24 months postoperatively with no signs of relapse.

RESUMEN El fibroma osificante periférico es una lesión benigna, nodular, firme a la palpación, de base sésil o pediculada, de color similar a la mucosa y al epitelio; puede estar intacto o ulcerado. Se observa más en mujeres y acomete solamente la encía. La lesión se asocia a factores irritantes, como caries, cálculo dental, entre otros. El objetivo del presente estudio es reportar el caso de una paciente de 27 años de edad, que ha presentado lesión en la mandíbula, quejando-se de aumento de volumen. La escisión quirúrgica ha sido el tratamiento de elección. La paciente encuentra se con 24 meses de postoperatorio, sin señales de recidva.

RESUMO O fibroma ossificante periférico (FOP) é uma lesão benigna, nodular, firme à palpação, de base séssil ou pediculada, com coloração semelhante à mucosa e ao epitélio; pode estar íntegro ou ulcerado. Prevalece no gênero feminino e acomete exclusivamente a gengiva. Associa-se a fatores irritantes, como cárie, cálculo dentário, entre outros. O objetivo do presente estudo é relatar o caso de uma paciente de 27 anos de idade, que apresentou lesão em mandíbula, queixando-se de aumento de volume. A excisão cirúrgica foi o tratamento de escolha. A paciente encontra-se com 24 meses de pós-operatório, sem sinais de recidiva.

Oral cavity lipoma: a study of 101 cases in a Brazilian population / Lipoma de cavidade oral: um estudo de 101 casos em uma população brasileira

ABSTRACT Introduction: Lipomas are benign soft tissue tumors commonly found in the human body. Although common in the head and neck region, in the oral cavity region they are uncommon, accounting for only 1% to 4% of benign oral cavity lesions. Objective: This study aims to identify the clinical and histopathological characteristics of oral cavity lipomas subjected to histopathological analysis at a pathology laboratory in the city of Fortaleza, Ceará, Brazil. Methods: Data from all cases of oral lesions diagnosed as lipoma and confirmed by histopathological examination over a period of 10 years were collected, including: gender, age, anatomical location, clinical diagnosis and histopathological subtypes. Results: During the period evaluated, 101 cases were diagnosed as lipomas, representing 1.01% of oral cavity biopsies. Females were more affected, with a male/female ratio of 1: 1.8, and with a peak of incidence between 50 and 70 years of age. The buccal mucosa was the most affected anatomical region, followed by the lower lip. Classic lipoma and fibrolipoma were the histological variants of lipoma most commonly found in the oral cavity, with 64 cases of classic lipoma and 29 cases of fibrolipoma. Other histological variants were: sialolipoma, angiolipoma, chondrolipoma, myxolipoma and intramuscular lipoma. Conclusion: Lipomas are uncommon lesions in the oral cavity, which present a higher prevalence in the buccal mucosa of adults, aged between 50 and 70 years, and with higher female preference.

RESUMEN Introducción: Lipomas son tumores benignos del tejido blando comúnmente encontrados en el cuerpo humano. Aunque comunes en la región de la cabeza y cuello, son raros en la cavidad oral, representando solo del 1% al 4% de las lesiones benignas en esa cavidad. Objetivo: El presente estudio pretende identificar las características clínicas e histopatológicas de lipomas de la cavidad oral; los materiales recolectados fueron analizados en un laboratorio de patología de la ciudad de Fortaleza, Ceará, Brasil. Métodos: Datos relativos a los últimos 10 años, como género, edad, localización anatómica, diagnóstico clínico y subtipos histopatológicos, se recolectaron de todos los casos de lesiones orales con el diagnóstico de lipoma confirmado mediante exámenes histopatológicos. Resultados: A lo largo del período evaluado, 101 casos fueron diagnosticados como lipomas, representando el 1,01% de las biopsias de la cavidad oral. El sexo femenino fue lo más afectado, con proporción hombre/mujer de 1:1,8, y pico de incidencia entre 50 y 70 años de vida. La mucosa yugal fue la región anatómica más afectada, seguida del labio inferior. Lipoma clásico y fibrolipoma fueron las variantes histológicas de lipoma más encontradas en la cavidad oral, con 64 casos de lipoma clásico y 29 de fibrolipoma. Otras variantes histológicas encontradas fueron sialolipoma, angiolipoma, condrolipoma, mixolipoma y lipoma intramuscular. Conclusión: Los lipomas son lesiones poco frecuentes en la cavidad oral y presentan mayor prevalencia en mucosa yugal de adultos con edades entre los 50 y los 70 años de vida, además de manifestaren preferencia por el sexo femenino.

RESUMO Introdução: Lipomas são tumores benignos de tecido mole comumente encontrados no corpo humano. Embora comuns na região de cabeça e pescoço, são raros na região da cavidade oral, representando apenas 1% a 4% das lesões benignas manifestadas nessa cavidade. Objetivo: O presente trabalho tem como objetivo identificar as características clínicas e histopatológicas de lipomas de cavidade oral; os materiais coletados foram submetidos a análise histopatológica em um laboratório de patologia da cidade de Fortaleza, Ceará, Brasil. Métodos: Dados referentes aos últimos 10 anos, como gênero, idade, localização anatômica, diagnóstico clínico e subtipos histopatológicos, foram coletados de todos os casos de lesões orais diagnosticados como lipoma e confirmados através de exames histopatológicos. Resultados: Durante o período avaliado, 101 casos foram diagnosticados como lipomas, representando 1,01% das biópsias de cavidade oral. O sexo feminino foi o mais acometido, com proporção homem/mulher de 1:1,8, e pico de incidência entre 50 e 70 anos de vida. A mucosa jugal foi a região anatômica mais afetada, seguida do lábio inferior. Lipoma clássico e fibrolipoma foram as variantes histológicas de lipoma mais encontradas na cavidade oral, com 64 casos de lipoma clássico e 29 de fibrolipoma. Outras variantes histológicas encontradas foram sialolipoma, angiolipoma, condrolipoma, mixolipoma e lipoma intramuscular. Conclusão: Os lipomas são lesões incomuns em cavidade oral e apresentam maior prevalência em mucosa jugal de adultos, com idades entre 50 e 70 anos, além de manifestarem predileção pelo sexo feminino.

Immunoexpression of calcitonin and glucocorticoid receptors in central giant cell lesions of the jaws.

BACKGROUND: This study analyzed the immunoexpression of calcitonin receptor (CTR) and glucocorticoid receptor (GR) in central giant cell lesions (CGCLs) and verified potential associations with patient's response to clinical treatment with intralesional injection of triamcinolone. MATERIALS AND METHODS: Fifty-four cases of CGCLs, including 22 non-aggressive, and 32 aggressive, were investigated by immunohistochemistry. RESULTS: Surgery was the therapeutic choice for 53.1% of the aggressive CGCLs, and 46.9% were submitted to the conservative treatment with intralesional triamcinolone injections. Among patients submitted to conservative treatment, 60% (n = 9) showed favorable response. CTR expression was observed in 68.51%, and GR in 94.44% of the total sample. There were no differences in the expression of CTR, neither GR in mononucleated stromal cells (MSCs) or multinucleated giant cells (MGCs), in relation to aggressiveness, treatment performed for and the response to conservative treatment. Both markers showed a positive correlation between their expression in MSCs and MGCs in the total sample (P < 0.0001). CTR expression on MSCs showed a positive correlation with MGCs in the aggressive and non-aggressive groups (P < 0.0001). CONCLUSIONS: Calcitonin receptor and GR expression were diffuse and similar in non-aggressive and aggressive cases, and it did not influence the response to clinical treatment with triamcinolone in the sample studied.

Aumento gengival associado à terapia de reposição hormonal / Gingival overgrowth associated to hormone replacement therapy ­ case report

Os aumentos gengivais são lesões proliferativas de evolução lenta e indolor que acometem os tecidos gengivais e envolvem várias possibilidades diagnósticas. O presente trabalho teve como objetivo relatar um caso clínico de aumento gengival em uma paciente jovem sob tratamento de reposição hormonal, ressaltando os aspectos clínicos e histopatológicos desta inter-relação.

Gingival overgrowth are proliferative lesions of painless and slow evolutive character, wich envolve the gingival tissues. This paper shows a case report of this lesion in a young female patient under hormone replacement therapy, highlightening the clinical and histopathologic aspects of this relationship.

Fibroma ossificante periférico ­ Relato longitudinal de dois casos clínicos / Long-term follow-up of peripheral ossifying fibroma ­ report of two cases

O fibroma ossificante periférico é uma lesão não neoplásica proliferativa, não patognomônico, de evolução lenta e indolor, que acomete os tecidos gengivais. O presente trabalho teve como objetivo relatar dois casos clínicos desta lesão em um acompanhamento em longo prazo, ressaltando os aspectos clínicos e histopatológicos, bem como seu tratamento e prognóstico.

The peripheral ossifying fibroma is a non-neoplasic, proliferative lesion of painless and slow evolutive character, which involves the gingival tissues. This paper reports on two clinical cases in a long-term follow-up highlightening their clinical and histopathologic aspects, treatment, and outcomes.

Clear cell variant of calcifying epithelial odontogenic tumor: Case report with immunohistochemical findings.

Calcifying epithelial odontogenic tumor (CEOT) is a rare benign odontogenic neoplasm, locally aggressive, characterized by sheets and nests of polyhedral epithelial cells exhibiting eosinophilic cytoplasm or less often clear cytoplasm. Additional features include nuclear pleomorphism without mitotic activity, concentric calcifications, and deposits of amyloid. Herein, we present an additional example of clear cell variant of CEOT occurring in a 25-year-old female. Microscopically, the tumor consisted on proliferation of epithelial cells with eosinophilic, clear vacuolated cytoplasm interspersed with focal areas of amyloid deposition. Tumor cells were immunopositive for AE1/AE3, CK14, CK19, ß-catenin, CD138, and p63. Key words:Calcifying epithelial odontogenic tumor, clear cell, histopathology, immunohistochemistry.

Perfil Epidemiológico de 23 casos de neoplasias malignas da cavidade oral atendidos em uma instituição odontológica de nível secundário / Epidemiological profile of 23 cases of malignant neoplasm of the oral cavity treated in a secondary dentistry institution

Introdução: O Câncer Bucal representa atualmente um dosgraves problemas de saúde pública no Brasil. Conforme dados doInstituto Nacional do Câncer (INCA), para o ano de 2012, estimase14.170 novos casos. Objetivo: Avaliar o perfil epidemiológicode 23 pacientes portadores de neoplasias malignas atendidos emuma instituição odontológica de atenção secundária no períodoentre maio de 2007 e setembro de 2009. Método: Prontuáriosde 23 pacientes com resultado histopatológico de lesão malignada cavidade oral foral revisados. Gênero, idade, sítio anatômicoe associação com tabagismo e etilismo foram avaliados.Resultados: O carcinoma espinocelular foi o mais prevalente,correspondendo a 87% dos casos. Houve maior prevalência nogênero masculino (60,9%) e na faixa etária entre 50 e 60 anos.Os sítios anatômicos mais acometidos foram língua (34,8%) eassoalho bucal (21,7%). Verificou-se uma associação entre aocorrência das lesões malignas e o hábito de tabagismo umavez que, do total de pacientes acometidos, 47,8% eram fumantese 43,5% eram ex-fumantes. O perfil epidemiológico encontradocondiz com os achados de estudos anteriormente realizados.Conclusões: A caracterização dos casos de câncer bucalpermite definir o perfil epidemiológico dos pacientes acometidose possivelmente represente grande contribuição para oestabelecimento de políticas preventivas relacionadas à doença.

Extensive thyroglossal duct cyst in 83-year-old patient.

Thyroglossal duct cysts (TDCs) are developmental cysts that occur in the neck. These lesions are usually encountered in the first decade of life; cases appear to be rare in elderly patients. Thirteen cases have been reported so far in patients over 70 years of age. Although the Sistrunk procedure remains the standard treatment, the management of TDCs continues to be a matter of controversy in some instances. We report the third case of extensive TDC published in patients over 80 years of age.

Efeito da pedra umes no processo de cicatrização tecidual. Estudo histológico em dorso de ratos / Effect of postassium alumina on wound healing. Histological study in rats

O uso de cristais de alúmen de potássio, conhecidos popularmente como pedra umes, é bastante difundido entre a população que frequenta postos públicos de atendimento odontológico, após pequenas cirurgias, como irrigante local e agente hemostático. O objetivo deste trabalho foi avaliar histologicamente o efeito do uso da pedra umes no reparo tecidual de feridas produzidas no dorso de ratos. Quinze ratos da raça Wistar foram divididos aleatoriamente em três grupos de cinco animais cada, de acordo com o tempo do período experimental: Grupo 1 (n = 5) sacrificados no 1º dia; Grupo 2 (n = 5) sacrificados no 7º dia e grupo 3 (n = 5) sacrificados no 14º dia. Quatro feridas foram realizadas com um bisturi tipo punch no dorso dos animais, sendo irrigadas uma vez ao dia, com uma das quatro substâncias: soro, clorexidina, pedra umes segundo diluição do fabricante, pedra umes segundo diluição de uso popular. Os resultados após 24 horas da aplicação da pedra umes sugerem um atraso na cicatrização, provavelmente devido ao seu potencial hemostático, porém nos demais períodos experimentais nenhuma diferença foi constatada entre os grupos. A pedra umes parece ser prejudicial no período inicial do processo de cicatrização, porém não apresenta nenhuma influência em seus eventos subsequentes

The use of potassium alumina is widely spread among the population. They frequently use it after minor surgical procedures, as a local irrigating solution, for bleeding control. The goal of the present work was to evaluate histologically the effects of two different dilutions of pedra umes at the healing response on experimental wounds in rats and to compare them with two other agents commonly used after surgical procedures: chlorhexidine and saline solution. Fifteen rats (Wistar rats) were divided into 3 groups accordingly to the day they were sacrificed: Group 1 (n=5), sacrificed at 1º day; Group 2 (n=5) sacrificed at the 7º day and e group 3 (n=5) sacrificed at the 14º day. Four wounds were made at their dorsum and irrigated once a day with one of the four substances: saline solution, chlorhexidine, potassium alumina diluted accordingly to the manufacturer recommendation and potassium alumina diluted in a popular used manner. The results suggested that wound healing may be delayed by the use of the potassium alumina at 1st day, however no difference was found between test (potassium alumina in two different dilutions) and control groups (saline and chlorhexidine) at the other experimental times.