Hydatid cyst involving the mandible ramus

ABSTRACT Parasitic infections rarely involve the oral and maxillofacial regions and pose a diagnostic challenge when they do. Hydatid cysts are parasitic cysts caused by Echinococcus granulosus. Intraosseous involvement is observed in 3% of cases, of which only 2-6% are in the maxillofacial region. A scientific literature search revealed only seven cases involving the mandible. We report a rare case in a 16-year-old female patient who presented with facial asymmetry and well-defined radiolucency of the ramus. Our findings will help in understanding the diagnostic issues caused by non-specific presentation and difficulties in suspecting such a rare diagnosis as echinococcosis of the oral or maxillofacial region. A thorough systemic investigation is essential as 20-30% of these cases show multiorgan involvement.

Cisto odontogênico glandular: relato de caso raro / Glandular odontogenic cyst: rare case report / Quiste dental glandular: reporte de un caso raro

Introdução: O cisto odontogênico glandular (COG) é um cisto odontogênico de desenvolvimento raro com potencial para agressividade e alta recorrência. Inicialmente denominado cisto sialodontogênico, por acreditarem que sua etiologia estaria possivelmente associada às glândulas salivares, posteriormente foi proposto o nome de COG e enfatizada a origem odontogênica para o mesmo. O objetivo deste trabalho foi relatar e discutir um caso de COG, analisando-se os aspectos clínicos, imaginológico e histológicos, discutindo com dados provenientes da literatura. Relato de caso: Paciente do sexo masculino, 22 anos, com diversas patologias de desenvolvimento dentário, cuja lesão localizava-se na região posterior da mandíbula associada a unidades dentárias não vitais simulando sinais de cisto radicular, foi realizada abordagem cirúrgica para extração dos dentes 36 e 37, curetagem da lesão e posterior acompanhamento de 5 anos sem recidiva. Considerações finais: O caso clínico demonstrou um COG que, pelas suas características clínicas e radiográficas, assemelhava-se a um cisto radicular em um paciente que apresentava alterações no desenvolvimento das unidades dentárias, contudo o laudo histopatológico foi fundamental para a elucidação diagnóstica e terapêutica adequada... (AU)

Introduction: Glandular odontogenic cyst (GOC) is a rare developing odontogenic cyst with potential for aggressiveness and high recurrence. Initially called sialodontogenic cyst, as they believed that its etiology was possibly associated with salivary glands, the name of COG was later proposed and its odontogenic origin was emphasized. The objective of this work was to report and discuss a case of COG, analyzing the clinical, imaging and histological aspects, discussing with data from the literature. Case report: Male patient, 22 years old, with several pathologies of dental development, whose lesion was located in the posterior region of the mandible associated with non-vital dental units simulating signs of radicular cyst, a surgical approach was performed to extract the teeth 36 and 37, curettage of the lesion and subsequent follow-up of 5 years without recurrence. Final considerations: The clinical case demonstrated a COG that, due to its clinical and radiographic characteristics, resembled a radicular cyst in a patient who presented alterations in the development of dental units, however the histopathological report was essential for the proper diagnostic and therapeutic elucidation... (AU)

Introducción: El quiste odontogénico glandular (GOC) es un quiste odontogénico en desarrollo poco común con potencial de agresividad y alta recurrencia. Inicialmente denominado quiste sialodontogénico, ya que creían que su etiología posiblemente estaba asociada a glándulas salivales, posteriormente se propuso el nombre COG y se enfatizó su origen odontogénico. El objetivo de este trabajo fue informar y discutir un caso de COG, analizando los aspectos clínicos, imagenológicos e histológicos, discutiendo con datos de la literatura. Caso clínico: Paciente masculino de 22 años con diversas patologías del desarrollo dental, cuya lesión se localizó en la región posterior de la mandíbula asociada a unidades dentales no vitales simulando signos de quiste radicular, se realizó un abordaje quirúrgico para extraer el dientes 36 y 37, curetaje de la lesión y seguimiento posterior de 5 años sin recidiva. Consideraciones finales: El caso clínico mostró un COG que por sus características clínicas y radiográficas se asemejaba a un quiste radicular en un paciente que presentaba alteraciones en el desarrollo de las unidades dentales, sin embargo el informe histopatológico fue fundamental para el adecuado esclarecimiento diagnóstico y terapêutico... (AU)

A Rare Odontogenic Cyst in an Uncommon Area: Case Report and Review of the Literature / Um cisto odontogênico raro em uma área incomum: Relato de caso e revisão da literatura

Abstract Objective Orthokeratinized odontogenic cyst is a rare developmental odontogenic cyst of the jaws. It is a less aggressive intraosseous cyst identified by an orthokeratinized epithelium. Case Report A 50-year-old male patient with the chief complaint of swelling in the anterior part of his face, and, intraorally, there was diffuse swelling in the palatal cortex. On panoramic radiography, there was a well-defined unilocular radiolucency on the right side of the maxilla and palatal cortical expansion, and thinning of the buccal and palatal cortexes was observed. The histopathological examination revealed a pathologic cyst that was lined by a thick orthokeratinized epithelium. Therefore, the diagnosis was orthokeratinized odontogenic cyst. Conclusion The orthokeratinized odontogenic cyst displays characteristic clinical, histopathological, and biological features that differ significantly from those of keratocystic odontogenic tumor (KCOT), but it has a better prognosis and lower recurrence rate. Thus, other radiolucent lesions of the jaws, including keratocystic odontogenic tumor (KCOT), must be considered in the differential diagnosis.

Resumo Objetivo O cisto odontogênico ortoceratinizado é um raro cisto odontogênico maxilar. É um cisto intraósseo menos agressivo, identificado por um epitélio ortoceratinizado. Relato de caso Um paciente do sexo masculino, de 50 anos de idade, com queixa principal de edema na parte anterior da face, e, intraoralmente, havia edema difuso no córtex palatal. Na radiografia panorâmica, havia uma radioluminescência unilocular bem definida no lado direito da maxila e expansão cortical palatina, e desbastamento dos córtex vestibular e palatino. O exame histopatológico revelou cisto patológico revestido por espesso epitélio ortoceratinizado. Logo, o dignóstico foi de cisto odontogênico ortoceratinizado. Conclusão O cisto odontogênico ortoceratinizado apresenta características clínicas, histopatológicas e biológicas que diferem significativamente das do tumor odontogênico ceratocístico (TOC), mas tem melhor prognóstico e menor taxa de recorrência. Portanto, outras lesões radiolúcidas dos maxilares, incluindo TOC, devem ser consideradas no diagnóstico diferencial.

Caracterización imagenológica del quiste residual maxilar: Reporte de caso y revisión de la literatura / Imaging characterization of the maxillary residual cyst: Case report and review of the literature

RESUMEN El quiste residual es el resultado de un tejido inflamatorio periapical remanente producto de una extracción dental sin un curetaje minucioso. Mayormente afecta a los varones y a la maxila. Su diagnóstico depende de los hallazgos del examen clínico, radiográfico e histopatológico. El presente caso tiene como objetivo reportar el caso de un quiste residual en la región anterior de la maxila de la cavidad oral de un paciente adulto del Centro Dental Docente Cayetano Heredia con antecedente de extracciones dentales en el área de la lesión hace 10 meses. Se realizó una enucleación y se tomó una muestra para el examen anatomopatológico, el cual posteriormente confirmó el diagnóstico de quiste residual.

SUMMARY The residual cyst is a result of remnant periapical inflammatory tissue produced by tooth extraction without a thorough curettage. It mainly affects males and the maxilla. Its diagnosis depends on the clinical, radiographic and histopathological examination findings. The present case aims to report the case of a residual cyst in the anterior region on the maxilla of the oral cavity in an adult patient of the Centro Dental Docente Cayetano Heredia with a history of dental extractions in the lesion area of 10 months ago. An enucleation was performed and a sample was taken for the pathological examination, which subsequently confirmed the diagnosis of residual cyst.

Epidemiological evaluation of jaw cysts according to the new WHO classification: a 30-year retrospective analysis

Abstract: The aim of the present study was to analyze the epidemiology of maxillofacial odontogenic and non-odontogenic cysts diagnosed for 30 years in a Brazilian population. A retrospective descriptive cross-sectional study was performed. Biopsy records were obtained from the archives of a Brazilian referral center between 1989 and 2019. Data regarding age, gender, anatomical location, and histopathological diagnosis were collected and categorized. Further, a literature search for similar studies was performed. A total of 6.994 biopsy records were evaluated, but only 367 (5.24%) cases were classified as odontogenic cysts (OC) or non-odontogenic cysts (NOC). Among all cystic lesions, 341 cases (92.9%) were OC and 26 cases (7.1%) were NOC. These lesions were more common in females (n = 208 / 56.67%) and located mostly in the mandible (n = 195 / 53.1%). In patients with OC, the radicular cyst was the most frequent (n = 134 / 36.5%), followed by the dentigerous cyst (n = 101 / 27.5%) and the odontogenic keratocyst (n = 52 / 14.2%). Patients with NOC had a higher frequency of epidermoid cyst (n = 12 / 3.3%), oral lymphoepithelial cyst (n = 7 / 1.9%), and nasopalatine duct cyst (n = 4 / 1.1%). The OCs were more prevalent than NOCs, and inflammatory cysts were the most common among all the OCs.

Bilateral mandibular buccal bifurcation cyst: a case report emphasizing the role of imaging examination in the diagnosis

A mandibular buccal bifurcation cyst is an inflammatory cyst that usually occurs on the buccal aspect of the permanent mandibular first molar of children. This lesion is diagnosed by an association of radiographic, clinical, and histological features. We report a bilateral case of mandibular buccal bifurcation cyst and discuss the main findings of this entity. A 7-year-old girl presented pain and delayed dental eruption in the posterior mandibular region. A cone beam computed tomography was performed and revealed hypodense lesions involving the crown and root of the mandibular first molars, with expansion of the buccal cortical and lingual tilting of the molar roots. A biopsy was carried out, and the common features of an inflammatory odontogenic cyst were histologically observed. The final diagnosis was bilateral mandibular buccal bifurcation cyst. Clinicians need to be aware of this diagnostic possibility in cases of mandibular cysts in children­especially when bilateral­to perform the correct treatment, which should not involve the extraction of the affected tooth.

Nasopalatine duct cyst - diagnosis, treatment and postoperative complications: report of two cases / Cisto do ducto nasopalatino - diagnóstico, tratamento e complicações pós-operatórias: relato de dois casos

ABSTRACT The objectives of this study were to report two cases of nasopalatine duct cyst and to review the relevant literature. In the first case, the lesion was approximately 1.5 cm in size and in the second case 3 cm, both characterized by localized swelling in the hard palate. The two cases presented a radiolucent unilocular image in the region of the incisive foramen. The diagnosis was nasopalatine duct cyst, established by excisional biopsy and anatomopathological examination. The second patient presented a late postoperative infection, four weeks after surgery, and was submitted to antibiotic therapy and drainage. Both patients were followed for more than 30 months, with no signs of recurrence.

RESUMO Os objetivos deste estudo foram relatar dois casos de cisto do ducto nasopalatino e rever a literatura pertinente. No primeiro caso, a lesão media aproximadamente 1,5 cm e, no segundo, 3 cm, ambas caracterizadas por tumefação localizada no palato duro. Os dois casos apresentaram imagem radiolúcida unilocular na região do forame incisivo. O diagnóstico foi cisto do ducto nasopalatino, realizado por meio de biópsia excisional e exame anatomopatológico. O segundo paciente apresentou infecção pós-operatória tardia, quatro semanas após a cirurgia, sendo submetido a antibioticoterapia e drenagem. Os dois pacientes foram acompanhados por mais de 30 meses, sem sinais de recidiva.

The effect of decompression as treatment of the cysts in the jaws: retrospective analysis

OBJECTIVES: The purpose of this study is to evaluate the treatment efficacy of enucleation after decompression. MATERIALS AND METHODS: A total of 17 patients with cystic lesion of the jaw were treated with decompression followed by enucleation. Pre- and postdecompression panoramic radiographs were analyzed. RESULTS: The mean percentage of reduction after decompression was 64%. The reaction was graded as good (>80%) in five patients (29.4%), moderate (50%-80%) in nine patients (52.9%), and poor (<50%) in three patients (17.6%). The reduction rate of larger cystic lesions was faster than that of smaller lesions. However, the reduction rate was not affected by age. The duration of follow-up ranged from one to eight years. There were no complications, and one case recurred. CONCLUSION: Decompression is an effective method for the initial treatment of jaw cysts.

Effect of oral health instructions in nursing of marsupialized jaw cysts / 中国实用护理杂志

Objective To evaluate the effect of oral health instructions in nursing of marsupialized jaw cysts. Methods 46 patients with cysts of jaw were divided randomly into two groups (education group and control), 23 in each. In addition of normal nursing processes in both groups, patients in education group were offered more oral health instructions, such as pathogenesis of jaw cysts, mechanism of marsupialization, wear and clean of a cyst plug, and oral hygiene maintenance. 12 months later, compliance, satisfaction, treatment effect and oral hygiene condition of the patients in the two groups were studied and compared. Results 100%of patients in the education group could return to clinical visits on time and 96%of patients did cyst rinsing after every meal, which were significantly higher (χ2=6.9, P0.05). Oral hygiene condition of patients in the education group was better than control in Debris Index (χ2=9.576, P < 0.05) and Plaque Index (χ2=8.212, P < 0.05). Conclusions Oral health instructions played positive role in improving patients′ compliance, degree of satisfaction, treatment effect and oral hygiene condition in patients with jaw cysts.

Treatment of nevoid basal cell carcinoma syndrome: a case report

Nevoid basal cell carcinoma syndrome (NBCCS), also known as Gorlin syndrome, is characterized by various embryological deformities and carcinoma formation. It is caused by PTCHI gene mutations and is autosomal dominantly inherited. Some of the main symptoms of NBCCS are multiple basal cell carcinomas, multiple keratocystic odontogenic tumors (KCOTs) of the mandible, hyperkeratosis of the palmar and plantar, skeletal deformity, calcification of the falx cerebri, and facial defomity. Recurrent KCOT is the main symptom of NBCCS and is present in approximately 90% of patients. In NBCCS, KCOTs typically occur in multiples. KCOTs can be detected in patients under the age of 10, and new and recurring cysts develop until approximately the age of 30. The postoperation recurrence rate is approximately 60%. This case report presents a 14-year-old female patient with a chief complaint of a cyst found in the maxilla and mandible. The patient was diagnosed with NBCCS, and following treatment of marsupialization and enucleation, the clinical results were satisfactory.

Correlation Between Radiographic Area and Immunolocation of MMP-2 and MMP-9 in Unilocular Radiographic Lesions

Unilocular bone cysts are the most common entities affecting the maxillofacial region. The mechanism of proliferation and expansion remains unclear. Metalloproteinases (MMPs) are associated to diverse pathological conditions. The aim of the present study was to correlate the radiographic aspect (area) and the presence of MMP-2 and MMP-9 in dentigerous cysts, radicular cysts and keratocystic odontogenic tumors. The radiographic area of each lesion was calculated using the mathematical formula of the ellipse area. All specimens were subjected to immunohistochemical analysis for these enzymes. The average radiographic area was 284.17 mm2, 235.81 mm2 and 381.81 mm2, respectively. Statistical analyses revealed no association between the immunoreactivity of MMPs and radiographic area of the lesions in all pathologies studied, except for MMP-2 and radicular cysts, for which smaller lesions had increased immunostaining for this enzyme. The results demonstrate that quantities of MMP-2 and MMP-9 are especially involved with dentigerous and radicular cysts in expansion, whereas these enzymes seem to be related to the biological behavior of keratocystic odontogenic tumors, indicating invasion and cell proliferation. Moreover, there is an inverse association between MMP-2 and MMP-9 in keratocystic odontogenic tumors (p=0.03; rs=-0.660), indicating activity in different regions.

Cistos ósseos uniloculares são as entidades mais comuns que afetam a região maxilofacial. O mecanismo de proliferação e expansão permanece obscuro. As metaloproteinases (MMPs) estão associadas a diversas condições patológicas. O objetivo do presente estudo foi correlacionar o aspecto radiográfico (área) e a presença de MMP-2 e MMP-9 em cistos dentígeros, cistos radiculares e tumores odontogênicos queratocísticos. A área radiográfica de cada lesão foi calculada usando a fórmula matemática da área de elipse. Todas as amostras foram submetidas à análise imunoistoquímica para estas enzimas. A área radiográfica média foi de 284,17 mm2, 235,81 mm2 e 381,81 mm2, respectivamente. As análises estatísticas não mostraram associação entre a imunorreatividade de MMPs e área radiográfica das lesões em todas as patologias estudadas, exceto para MMP-2 e cistos radiculares, nas quais as lesões menores tinham maior imunomarcação para esta enzima. Os resultados demonstraram que a quantidade de imunomarcação da MMP-2 e MMP-9 estão envolvidos com cistos dentígeros e radiculares na expansão óssea, ao passo que estas enzimas parecem estar relacionados com o comportamento biológico dos tumores odontogénicos queratocísticos, indicando invasão e proliferação celular. Além disso, há uma relação inversa entre a MMP-2 e MMP-9 em tumores odontogénicos queratocísticos (p=0,03; rs= -0,660), indicando atividade em diferentes regiões.

Quiste residual gigante: presentación de un caso / Residual cyst: a case presentation

FUNDAMENTO: un quiste es una estructura con tendencia a la forma redondeada, constituida por una pared externa de tejido conectivo fibroso, una pared interna formada por un tapiz epitelial. La cavidad quística contiene un material líquido o semilíquido de color cetrino que, cuando se infecta, se convierte en purulento y carmelitoso. El quiste residual puede haber sido anteriormente un quiste lateral o un quiste apical y al haberse extraído el diente, a partir de cuyo periodonto se forma el quiste, se queda en el tejido óseo sin haber sido extirpado. OBJETIVO: presentar un caso al cual se le diagnosticó y trató un quiste residual mandibular que abarcaba la hemiarcada izquierda, que permitió restablecer las funciones masticatorias y estética. CASO CLÍNICO: paciente que fue atendido en la consulta de Cirugía Maxilofacial de la Facultad de Estomatología de Camagüey, con un aumento de volumen en la región lateral izquierda, con antecedentes de trauma anterior que le provocó fractura de mandíbula. Se describen las características clínicas de la enfermedad y el tratamiento quirúrgico realizado, se utilizó para el mismo los principios de la técnica de enucleación. CONCLUSIONES: aunque se han reportados pocos casos en la literatura nacional y extranjera, estos han sido quistes de menor tamaño que incluyen uno o dos dientes, no existen reportes de quistes residuales que involucren toda la arcada o hemiarcada dentaria. Se obtuvieron resultados estéticos satisfactorios con la técnica quirúrgica empleada y no se presentaron complicaciones.

BACKGROUND: a cyst is a structure with a tendency to be rounded, made up of an external wall of fibrous connective tissue, an internal wall composed of epithelial tissue. The cystose cavity contains sallow liquid or semiliquid material that, when becomes infected, gets purulent and brown. A residual cyst could have been previously a lateral cyst or an apical cyst and when the tooth is extracted from the periodontium, the cyst remains in the osseous tissue without being removed. OBJECTIVE: to present a case diagnosed and treated for a mandibular residual cyst that extended over the left hemiarcade. It was possible to re-establish the masticatory and aesthetic functions. CLINICAL CASE: a patient who was treated in the Maxillofacial Surgery consultation of the Faculty of Stomatology of Camagüey. The patient presented a volume increase in the left lateral region and an antecedent of front trauma that caused fracture of the lower jaw. The clinical characteristics of the disease and the surgical treatment conducted are described. The principles of the enucleation technique were used for conducting the surgical treatment. CONCLUSIONS: in spite of the fact that few cases have been reported in the national and foreign literature, these have been smaller cysts that included one or two teeth. There are no reports of residual cysts that extend over all the dental arcade or hemiarcade. Satisfactory aesthetic results were obtained with the surgical technique applied and there were no complications.

Odontogenic Keratocyst- The Controversies in Nomenclature and Treatment Modalities.

Summary: Odontogenic keratocysts (OKC) now officially known as Keratocystic odontogenic tumor (KCOT) is a benign odontogenic intraosseous tumor which is potentially agrressive having distinguished clinical and histopathological features. Based on a literature review, more aggressive treatment — either resection or enucleation supplemented with Carnoy’s solution with or without peripheral ostectomy — results in a lower recurrence rate than enucleation alone or marsupialization. WHO’s reclassification of this lesion from cyst to tumour underscores its aggressive nature and should motivate clinicians to manage the disease in a correspondingly aggressive manner. The purpose of this paper is to review and discuss the redesignation of KCOT and the implications for treatment.

Decompression Device Using a Stainless Steel Tube and Wire for Treatment of Odontogenic Cystic Lesions: A Technical Report / 대한악안면성형재건외과학회지

Decompression is considered an effective treatment for odontogenic cystic lesions in the jaw. A variety of decompression devices are successfully used for the treatment of keratocystic odontogenic tumors, radicular cysts, dentigerous cysts, and ameloblastoma. The purpose of these devices is to keep an opening between the cystic lesion and the oral environment during treatment. The aim of this report is to describe an effective decompression tube using a stainless steel tube and wire for treatment of jaw cystic lesions.

Observation on the effect of decompression in the treatment of large jaw cystic lesions / 中国基层医药

Objective To investigate the clinical efficacy and safety of decompression in the treatment of large jaw cystic lesions.Methods 42 patients suffered from large jaw cystic lesions were randomly divided into two groups,21 patients in the control group performed the traditional curettage surgery;21 patients in the experiment group performed the decompression surgery.The intraoperative blood loss,operative time,the incidence rate of postoperative pain and postoperative infection,follow-up recurrence rate were compared between the two groups.Results The intraoperative blood loss,operative time,postoperative pain and postoperative infection rates of the experiment group were significantly better than the control group,the differences between two groups were significant(P ＜ 0.05).The recurrence rate of the control group and the experiment group was 24.0％,4.8％.The recurrence rate of the experiment group was significantly lower than the control group (P ＜ 0.05).Conclusion Compared to the traditional curettage surgery,decompression surgery can reduce blood loss,shorter operative time,reduce postoperative infection,reduce the risk of recurrence,then improve the clinical efficacy.

Evaluation of the cell block technique as an auxiliary method of diagnosing jawbone lesions

This study investigated the viability of the cell block technique as an auxiliary method of diagnosing jawbone lesions. Thirty-three clinically diagnosed jawbone lesions with a cystic appearance were subjected to aspiration. The aspirated material was processed by the cell block technique, and the lesions were biopsied and treated. Cytological findings (cell block) and histopathology analyses (gold standard) were compared by the chi-square test. There were associations between cysts and cholesterol crystal clefts, between keratocystic odontogenic tumors (KOT) and epithelial cells, and between KOT and parakeratin. The occurrence of cholesterol crystal clefts in cell block slides was correlated with cystic lesions, and the parakeratin presence was a KOT indicator. The cell block technique proved to be fast, easy-to-handle, and low-cost, making it an attractive auxiliary method for the preliminary diagnosis of jawbone lesions.

Orthokeratinized odontogenic cyst: a report of two cases in the mandible / Cisto odontogênico ortoqueratinizado: relato de dois casos em mandíbula

PURPOSE: To describe the behavior clinical and pathological features of two cases of odontogenic cyst orthokeratinized. CASE DESCRIPTION: In case 1, a 17-year-old woman presented hard and painless swelling in the left posterior mandible. Radiographically, a radiolucent area with a radiopaque was observed. A clinical diagnosis of ameloblastoma or odontogenic keratocystic tumor was established. The histopathological examination revealed an orthokeratinized odontogenic cyst. In case 2, a 23-year-old woman presented a radiolucent lesion surrounded by radiopaque halo symmetrically distributed on both partially erupted lower third molars. A clinical diagnosis of bilateral dentigerous cyst (DC) was rended. The histopathological examination showed bilateral orthokeratinized odontogenic cyst. CONCLUSION: Orthokeratinized odontogenic cyst should be considered in the differential diagnosis of lesions occurring in the jawbones associated with an impacted tooth, particularly those cases simulating dentigerous cyst. In addition, we observed the importance of radiographs taken prior to orthodontic treatment as an important tool in the diagnosis of oral pathologies. Performing routine radiograph is of high clinical value, especially before orthodontic treatment.

OBJETIVO: Descrever os aspectos clinicopatológicos de dois casos de cisto odontogênico ortoqueratinizado e a compará-los a relatos anteriores. RELATO DO CASO: No caso 1, uma mulher de 17 anos de idade, apresentou edema endurecido e indolor na mandíbula posterior esquerda. Radiograficamente, uma área radiolúcida com uma radiopacidade foi observada. O diagnóstico clínico de ameloblastoma ou tumor odontogênico ceratocístico foi estabelecido. O exame histopatológico revelou um cisto odontogênico ortoqueratinizado. No caso 2, uma mulher de 23 anos apresentou duas lesões radiolúcidas circundadas por halos radiopacos simetricamente distribuídas, associada aos terceiros molares inferiores irrompidos. Um diagnóstico clínico de cisto dentígero bilateral (DC) foi estabelecido. O exame histopatológico mostrou ser um cisto odontogênico ortoqueratinizado. CONCLUSÃO: Cisto odontogênico ortoqueratinizado deve ser considerado no diagnóstico diferencial das lesões que ocorrem na mandíbula associado com dentes impactados, especialmente aqueles casos que simulem o cisto dentígero. Além disso, observamos a importância de tomadas radiográficas antes do tratamento ortodôntico no diagnóstico de patologias bucais.

Localização inusitada de um Cisto Ósseo traumático: aspectos radiográficos / Unusual localization of the Traumatic Bone Cyst: radiographic aspect

O cisto ósseo traumático é considerado um pseudocisto que ocorre com baixa freqüência, representando aproximadamente 1% dos cistos dos maxilares. É uma cavidade dentro do osso delimitada por tecido conjuntivo, podendo estar vazia ou contendo fluido. Geralmente é descoberto num exame radiográfico de rotina e a maior incidência ocorre no corpo da mandíbula, radiograficamente caracteriza-se como uma área radiolúcida unilocular bem definida, com um limite oval ou festonado. A lesão costuma contornar as raízes dos dentes adjacentes.Relato de caso: o presente trabalho tem como objetivo relatar um caso clínico de cisto ósseo traumático em região incomum de processo condilar em paciente jovem, descrevendo as características clínicas, histopatológicas, radiográficas, tomográficas, plano de tratamento, prognóstico e acompanhamento do paciente.Conclusão: esta é uma lesão essencialmente benigna do ponto de vista clínico. O diagnóstico deverá ser feito com exames clínicos, radiográficos/tomográfico e histopatológico. O tratamento, na maioria das vezes, envolverá exploração cirúrgica com curetagem, tendo um excelente prognóstico...

The traumatic bone cyst is considered a pseudocist not frequently observed, representing approximately 1% of the maxilares cysts. It is a cavity inside the bone tissue, which may be empty or containing fluid. Usually it is found in routine radiographic examination and more frequently in the mandible body. It is usually located on the symphysis or body of mandible region as a well defined an only radilucent area.Case report: the aim of this work is to present a report case of an traumatic bone cyst, in unusual area of mandibular ramus observed in a young patient. It describes the clinical, hispathological, radiographic and tomographic characteristics of the case, a treatment plan, a prognostic and patient observation informations. Conclusion: this is an essentially benign lesion from a clinical standpoint. The diagnosis should be done with clinical, radiographic/tomographic and histopathologic. In most cases the treatment will involve exploratory surgery with curettage, with an excellent prognosis...

Cell block technique as a complementary method in the clinical diagnosis of cyst-like lesions of the jaw

OBJECTIVE: To evaluate the applicability of the cell block technique as a complementary method for presumptive diagnosis in the analysis of cyst-like aspirates from jaw lesions prior to histopathological diagnosis. MATERIAL AND METHODS: The sample was made up of 17 cyst-like jaw lesions. After puncture, the aspirates were centrifuged, fixed in formalin, embedded in paraffin and processed. All lesions were biopsied and submitted to histopathological examination. RESULTS: In 9 cases, the cytopathological analysis using the cell block method showed a predominant presence of erythrocytes, inflammatory cells and few epithelial cells. In the other 8 cases, the cell block technique demonstrated the presence of parakeratin, whose histopathological analysis confirmed the occurrence of keratocystic odontogenic tumors (KOTs). CONCLUSIONS: According to the studied cases, the cell block method was proven to be a simple, fast and low-cost technique to effectively differentiate KOTs from other lesions with similar clinical and radiographic features. The cell block technique comprises cellular preparations useful to determine a clinical diagnosis and help to develop a therapeutic plan for those lesions.

Cisto do ducto nasopalatino: relato de caso clínico / Nasopalatine duct cyst: clinical case report

O cisto do ducto nasopalatino é o de maior frequência na classifcação dos cistos de origem não odontogênica. O seu desenvolvimento pode promover alterações estéticas e comprometer estruturas que compõem a região nasopalatina. Este trabalho tem como objetivo relatar um caso clínico de cisto do ducto nasopalatino, em cuja conduta realizou-se marsupialização seguida de enucleação como tratamento cirúrgico desta lesão. Ressaltam-se também as dificuldades de diagnóstico do cisto do ducto nasopalatino e a conduta terapêutica preconizada para a sua resolução.

The nasopalatine duct cyst (NPDC) is considere to be the most frequent of the nonodontogenic cysts. Its development can cause aesthetic alterations and compromise the structures composing the nasopalatine region. This work aimed to report a clinical case of the nasopalatine duct, in which marsupialization was used, followed by enucleation as a surgical treatment for this lesion, with emphasis on the diagnosis diffculties experienced and the therapeutic conduct proclaimed for its resolution.