Clinicopathologic features of nasopalatine duct cysts: A retrospective study in two Brazilian oral and maxillofacial pathology referral centers.

BACKGROUND: Nasopalatine duct cyst (NDC) is the most common non-odontogenic cyst in the oral cavity. Clinically it is not difficult to suspect these lesions based on clinical and radiographic appearance. However, the histopathological diagnosis may be difficult due to the broad morphological diversity of these lesions. The objective was to analyze the clinicopathological features of NDCs diagnosed in two oral and maxillofacial pathology services in the Brazilian northeast. MATERIAL AND METHODS: A retrospective clinicopathologic study was performed. A total of 18,121 clinical records of oral lesions from two oral and maxillofacial pathology services in Brazil were analyzed (2000-2020). All NDCs cases were revised and demographic, clinical, radiographic, and histopathological data were collected. RESULTS: Among 18,121 diagnoses in the oral pathology services, 45 (0.2%) were NDCs. The series comprises 24 males (53.3%) and 21 females (46.7%), with a mean age of 43.2 years-old. Most lesions were asymptomatic (n = 27, 60%) with an mean size of 2.1 cm. Microscopically, the non-keratinized stratified squamous epithelium was the most common (66.7%). However, in 88.9% of cases, the epithelial lining was varied and composed of two or more types of epithelium. There was no significant association between the type of epithelium and the size of the cysts (p = 0.389). Nerve, blood vessels, hemorrhage, and chronic inflammatory infiltrate were commonly observed. In contrast, there was a low frequency of mucous glands, sebaceous glands, cholesterol clefts, and multinucleated giant cells. CONCLUSIONS: The clinical, radiographic, and microscopic findings observed in this study are similar to those reported in the literature. Due to the morphological diversity of NDC, it is needed to correlate its histopathological features with the clinical and radiographic findings to establish a correct diagnosis.

Use of Cone-beam Computed Tomography as a Critical Component in the Diagnosis of an Infected Nasopalatine Duct Cyst Mimicking Chronic Apical Abscess: A Case Report.

Nasopalatine duct cysts (NPDCs) and other nonodontogenic lesions of the oral cavity may mimic odontogenic pathoses. We present a case of a 22-year-old man with a history of dental trauma and a lesion displaying the typical clinical and radiographic signs of a chronic apical abscess- a buccal sinus tract that was traced to a radiolucent area in the periapex of a maxillary central incisor. A comprehensive diagnostic process that included a cone-beam computed tomographic scan and a histopathologic examination of the lesion after complete enucleation led to the final diagnosis of an infected NPDC. The adjacent tooth was vital at the 1-year posttreatment follow-up, and a radiograph demonstrated complete healing of the periradicular structures. This case demonstrates the ability of NPDCs to present clinical and radiographic signs similar to apical inflammatory lesions and the need for a meticulous diagnostic process in order to avoid unnecessary endodontic intervention. The article also discusses the differential diagnoses of nonodontogenic lesions in the premaxillary area.

Nonodontogenic Cysts.

This article focuses on describing nonodontogenic cysts of the oral and maxillofacial region. The lesions described include nasopalatine duct canal cyst, nasolabial cyst, traumatic bone cyst, Stafne bone cyst, aneurysmal bone cyst, focal osteoporotic bone marrow defect, dermoid cyst, epidermoid cyst, pilar cyst, and sebaceous cyst. The intent of this article is to make general dentists aware and knowledgeable of the nonodontogenic cysts they may encounter in everyday practice, so they can adequately manage or make an appropriate referral to improve treatment outcomes and reduce patient morbidity.

The effectiveness of decompression as initial treatment for jaw cysts: A 10-year retrospective study

Background: To assess the effectiveness of a psychoeducational intervention program designed to facilitate the performance of a series of steps of oral examination in children, adolescents and adults with autism spectrum disorder (ASD), in the Bio-Bio region, Chile. Material and Methods: A prospective, quasi-experimental study with pre-intervention, post-intervention and maintenance tests was carried out. Behavior was measured using Frankl’s scale and the number of steps of a dental examination completed (1-10 steps) was also recorded. Only 104 of the 188 subjects with ASD that agreed to participate in the study met all the inclusion criteria. Results: 82 people with ASD completed the psychoeducational intervention. The mean number of steps achieved pre- and post-intervention was 4.1 and 9.4, resulting in a clinically and statistically significant difference. Regarding behavior, the median in the pre-test was 2 (negative behavior) and in the post-test it increased to 3 (positive behavior), this difference being relevant and statistically significant. A maintenance test one month later on 63 people with ASD found no variations in behavior and in the number of examination steps completed. Conclusions: The proposed intervention was effective as an increase of more than 5 in the number of steps of examination completed was achieved. Frankl's behavior rating also increased, from negative to positive, in a group of children, adolescents and adults with ASD

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Bilateral nasolabial cyst: a rare case.

Nasolabial cysts are rare non-odontogenic cysts characterised by their extraosseous appearance and are always located near to ala nasi. They are painless and located beneath the mucosa leading to soft tissue swelling and elevation of nasal ala. Bilateral nasolabial cyst is a rare occurrence. This case report describes the clinical diagnostic features and multimodal imaging appearance of nasolabial cyst with review of literature.

A retrospective analysis of oral and maxillofacial pathology in a pediatric population from Rio de Janeiro-Brazil over a 75-year period

BACKGROUND: The aim of this study was to analyze the distribution of oral and maxillofacial lesions affecting children and adolescents patients from a single oral pathology laboratory from Rio de Janeiro, Brazil. MATERIAL AND METHODS: Oral and maxillofacial lesions biopsied in patients younger than 19-years were retrieved from the oral pathology files of the Department of Oral Diagnosis and Pathology, School of Dentistry, Federal University of Rio de Janeiro over a 75-year period (1942-2017). The clinical data and the diagnoses of each case were included in a Microsoft Excel(R) database, being classified into 13 categories according to the etiology. A descriptive analysis of the variables age, gender and final diagnosis was made. RESULTS: From 19.095 lesions diagnosed in this period, 2408 (12.61%) were from patients aged 0 to19 years, with a higher incidence in females in the second decade. Salivary gland pathology was the most common group of lesions (24.30%), followed by reactive lesions (16.82%) and odontogenic cysts (14.66%). Mucocele was the most common lesion (21.72%), followed by dentigerous cyst (6.48%) and fibrous hyperplasia (6.44%). Malignant lesions were observed in 1.12% of all cases with Burkitt lymphoma as the most frequent. CONCLUSIONS: Our results were similar to previous studies and knowledge of these data may contribute to the understanding of oral lesions that most commonly affects children

Recurrence rate of odontogenic keratocyst treated by enucleation and peripheral ostectomy: Retrospective case series with up to 12 years of follow-up

BACKGROUND: Odontogenic keratocysts have been reported with high recurrence rates in the literature so various treatment modalities from simple enucleation to resection have been performed to achieve the cure. The purpose of this retrospective study was to investigate the recurrence rate of odontogenic keratocysts (OKCs) treated by enucleation and peripheral ostectomy. MATERIAL AND METHODS: An electronic search of the database of the Hacettepe University, Faculty of Medicine, Department of Pathology, was undertaken to identify patients histologically diagnosed with OKCs treated at Department of Oral and Maxillofacial Surgery between 2001 and 2015. RESULTS: In total, 81 patients were studied. The mean age at the time of diagnosis was 42 years, and the male:female ratio was 1:0.7. OKCs were located primarily in the posterior mandibular region (41%). Twenty-seven patients were re-examined to determine the recurrence rate. The mean follow-up period was 5 years (range, 1-12 years). The recurrence rate was 14.8%. The relationship between location of the lesion and recurrence was not statistically significant (p= 0.559). There was also no statistically significant relation between the recurrence rate and treatment option of teeth involved in the lesion (p= 0.579). CONCLUSIONS: The authors conclude that treatment of OKCs by enucleation with peripheral ostectomy is associated with minimal morbidity and is preferred over other aggressive treatment modalities. Meticulous radiographic examination and careful surgical resection may decrease the recurrence rate of OKCs

A retrospective multicentre study of cystic lesions and odontogenic tumours in older people.

OBJECTIVE: The aim of this study was to investigate the frequency and some characteristics of odontogenic tumours, odontogenic cysts and non-odontogenic cysts in an elderly population (≥60 years). BACKGROUND: Few studies describe the distribution of oral lesions in older people. MATERIALS AND METHODS: A retrospective descriptive cross-sectional study was performed. Biopsy records were obtained from the archives of four Brazilian referral centres between 2000 and 2016. Data such as gender, age, anatomical location, symptomatology and histopathological diagnosis were collected and categorised. Statistical analyses were performed adopting a P-value of ≤.05 and a 95% confidence interval. RESULTS: A total of 7259 biopsy records of elderly participants were analysed; 642 cases were cystic lesions and odontogenic tumours, 491 of which being classified as odontogenic cysts (76.5%), 75 as odontogenic tumours (11.7%) and 76 as non-odontogenic cysts (11.8%). The most frequent lesions in each group were radicular cyst (n = 268), ameloblastoma (n = 51) and salivary duct cyst (n = 21), respectively. Overall, women were more affected (n = 351, mean age: 68 years). Intraosseous lesions were more common in the mandible (n = 342), and soft tissue cysts occurred more in the lip (n = 13). CONCLUSION: Odontogenic cysts were relatively common, whereas odontogenic tumours and non-odontogenic cysts were rarer among the older people studied in the present investigation.

[Methods of diagnosis of non-specific and specific lymphideniates of the jaw-facial part in children (literature review)].

OBJECTIVE: Introduction: Insufficient basic knowledge on the mechanisms of the multifactoral etiology and pathogenesis of various forms of maxillofacial lymphadenitis of odontogenic and non-odontogenic nature in children causes difficulties in making differential diagnosis. The algorithm of their examination involves a large number of methods, each of which has its own advantages and disadvantages with variable informativeness, depending on the particular situation. The aim: The paper is aimed atfamiliarization of broad medical public with informativeness of diagnostic measures in the nonspecific and specific affection of lymph nodes of the maxillofacial area in children. PATIENTS AND METHODS: Materials and methods: A thorough comprehensive analysis and generalization of scientific achievements elucidated in the fundamental and periodical publications, relating to diseases of the lymphatic system, has been carried out. RESULTS: Results: It has been establishedthat, despite a large variety of diseases accompanied by the reaction of the lymph nodes of different anatomic localization, current diagnostic possibilities are potent to establish a clinical diagnosis in most cases. In this way, the current diagnostic model requires the interaction of clinicians, infectiologists, molecular biologists, geneticists and morphologists. In this regard, the issues of efficient organization of the diagnostic process, detailing all stages of the search for accurate diagnosis, are crucial. CONCLUSION: Conclusions: The collected material on various forms of lymphadenitis and their secondary affection is fragmentary to date due to the absence of the unified methodological approach to carrying out differential diagnosis, which requires generalization and systematization of scientific groundwork. Unfortunately, the algorithms of examination of this category of patients, especially with lymphadenopathy, are not sufficiently developed to date, indicating the need for further search and optimization of diagnostic criteria taking into account modern realities.

Epidemiologic study of odontogenic and non-odontogenic cysts in children and adolescents of a Brazilian population

Background: the objective of this study was to describe the frequency of cystic lesions in a Brazilian population of patients histopathologically diagnosed in the first and second decade of life. Material and Methods: Retrospective descriptive cross-sectional study was performed. Biopsy records were obtained from the archives of a Brazilian referral center between 1980 and 2016. Results: A total of 2.114 biopsy records of pediatric patients were analyzed with oral and maxillofacial lesions. Data such as gender, age, anatomical location, and histopathological diagnosis were collected and categorized. Among all oral and maxillofacial lesions (n=2.114), were diagnosed 294 cases of odontogenic cysts (13.9%) and 16 cases of non-odontogenic cysts (0.8%). The most frequent lesions in each group were, respectively: radicular cyst (n=145) and epidermoid cyst (n=4). These lesions were most common in female (n=158), with a mean age of 14 years. For intraosseous lesions, the mandible (n=148) was the most affected anatomic site; moreover, the floor of the mouth (n=6) was most affected by cysts in soft tissues. Conclusions: Odontogenic cysts were relatively common in population studied, but non-odontogenic cysts were rare in these patients (AU)

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Epidemiologic study of odontogenic and non-odontogenic cysts in children and adolescents of a Brazilian population.

BACKGROUND: the objective of this study was to describe the frequency of cystic lesions in a Brazilian population of patients histopathologically diagnosed in the first and second decade of life. MATERIAL AND METHODS: Retrospective descriptive cross-sectional study was performed. Biopsy records were obtained from the archives of a Brazilian referral center between 1980 and 2016. RESULTS: A total of 2.114 biopsy records of pediatric patients were analyzed with oral and maxillofacial lesions. Data such as gender, age, anatomical location, and histopathological diagnosis were collected and categorized. Among all oral and maxillofacial lesions (n=2.114), were diagnosed 294 cases of odontogenic cysts (13.9%) and 16 cases of non-odontogenic cysts (0.8%). The most frequent lesions in each group were, respectively: radicular cyst (n=145) and epidermoid cyst (n=4). These lesions were most common in female (n=158), with a mean age of 14 years. For intraosseous lesions, the mandible (n=148) was the most affected anatomic site; moreover, the floor of the mouth (n=6) was most affected by cysts in soft tissues. CONCLUSIONS: Odontogenic cysts were relatively common in population studied, but non-odontogenic cysts were rare in these patients.

Clinical and histopathological features of nasopalatine duct cyst: A 47-year retrospective study and review of current concepts.

PURPOSE: To evaluate the clinical and histopathological features of nasopalatine duct cysts (NDCs) stored in the archives of a referred Oral Pathology Service over a 47-year-period, and to review current concepts about these cysts. MATERIAL AND METHODS: All NDCs were reviewed, and clinical data were obtained from the patient records. Thirty cases were re-evaluated microscopically by 2 oral pathologists. RESULTS: Among 14,564 cases, 30 (0.20%) were NDCs. Fifteen (50.0%) of the patients were female, and the mean age was 42.7 years. The lesions measured on average 2.37 ± 1.69 cm. Histologically, stratified squamous epithelium, alone or in combination with other epithelia, was present in 13 (46.6%) cases. Goblet cells and subepithelial hyalinization were common. Fourteen (46.6%) cases exhibited a slight degree of inflammation. Nerves were observed in 15 (50%) cases and mucous glands in 7 (23.3%). Hyaline ring granulomas (which is described here for the first time in NDC) and cholesterol crystals were not common. CONCLUSION: Knowledge of clinical-histopathological aspects of NDCs provides more accurate data about their nature and behavior. Our results suggest that the predominant epithelial lining of these cystic lesions is exclusively stratified squamous epithelium or combined with another type. Vessels, nerves, mucous glands and inflammatory infiltrate are frequently observed.

Differences in clinical manifestations of odontogenic and non-odontogenic lymphadenitis.

INTRODUCTION: The acute suppurative lymphadenitis and its chronic forms prevail in the structure of inflammatory processes of the maxillofacial area in children. High incidence of the acute and chronic forms of lymphadenitis of both odontogenic and nonodontogenic origin is caused by the anotomophysiological peculiarities of the structure of the teeth and soft tissues in children in different age periods. THE AIM: The paper was aimed at comparison of clinical manifestations of the acute and chronic odontogenic and non-odontogenic lymphadenitis. MATERIALS AND METHODS: The results of the checkup and 5-year-period treatment of 324 children with the acute and chronic forms of the nonspecific lymphadenitis of the maxilifacial area have been used. Four study groups have been formed. The first and the second group included 16 (38,0%) and 26 (62%) children with the acute submandibular suppurative lymphadenitis of the odontogenic and nonodontogenic origin, respectively. 12 (35,3%) and 22 (64,7) individuals with chronic hyperplastic lymphadenitis have been assigned to the third and the fourth group, respectively. RESULTS: The clinical course of the acute submandibular suppurative lymphadenitis of various etiologies is different. Rapid development of the local clinical manifestations with its dramatic progressing is specific to odontogenic lymphadenitis. Its clinical course is characterized by the more apparent overall response of the body, increase of the body temperature, and these symptoms are more manifested than in nonodontogenic lymphadenitis. The clinical course of chronic hyperplastic lymphadenitis is accompanied by the enlarged regional lymph nodes of various size and shapes and dense-elastic consistency. Clinical manifestations of nonodontogenic lymphadenitis were less apparent and the overall sate was normal in both forms of lymphadenitis. CONCLUSIONS: Nonodontogenic lymphadenitis prevailed in all nosological forms of the acute and chronic nonspecific lymphadenitis.

Odontogenic and nonodontogenic cysts: An analysis of 526 cases in Turkey.

PURPOSE: The aim of this study was to determine the age, gender, and sites of different types of odontogenic cysts (OCs) and non-OCs (nOCs) (seen in eastern Anatolian population in Turkey. MATERIALS AND METHODS: The following data were collected from the clinical records and histopathology reports of the Department of Oral and Maxillofacial Surgery and the Department of Oral Pathology, Ataturk University, Turkey, during a period of 10 years. They were analyzed descriptively in terms of incidence, age, sex, cyst type, and site. RESULTS: A total of 526 cysts were diagnosed during a 10-year period. Of these, 330 (62.7%) were in males, and 196 (37.3%) were in females, the male:female ratio was 1.7:1. There were 509 (96.8%) OCs and 17 (3.2%) nOCs. There were 406 (77.2%) inflammatory OCs and 103 (19.6%) developmental OCs. Radicular cysts were the most frequent (66.4%), followed by dentigerous (19.2%) and residual (10.8%) cysts. Only nasopalatine duct cyst was found as nOC in this study (3.2%). CONCLUSION: The distribution of jaw cysts in the Turkish Eastern Anatolian population is relatively similar to that of other populations reported in previous studies in the literature, in which most OCs were of inflammatory origin. However, the relative rates of cysts were higher than those reported in other studies.

Diagnóstico diferencial entre periodontite apical e cisto do ducto nasopalatino: relato de caso / Differential diagnosis of apical periodontitis and nasopalatine duct cyst: case report

A presença de uma alteração óssea periapical na região anterior da maxila, mais precisamente entre os incisivos superiores, pode ser erroneamente confundida com uma periodontite apical (AP) ou um cisto do ducto nasopalatino (CDNP). O diagnóstico diferencial é de suma importância para definir o tratamento adequado. O exame clínico, mais especificamente o teste de sensibilidade pulpar, é de suma importância, pois dentes portadores de periodontite apical não respondem ao teste, diferentemente dos casos de cisto do ducto nasopalatino. Uma paciente com 48 anos de idade, sexo feminino, compareceu à clínica de Endodontia com inchaço na região de palato e fundo de sulco anterior, relatando dor aguda ao redor dos incisivos centrais, sendo submetida a exames clínicos e radiográficos. Os exames clínicos mostraram ausência de vitalidade pulpar e as radiografias evidenciaram uma área radiolúcida simétrica na região de linha média, que poderia ser uma lesão endodôntica ou um CDNP. Durante o tratamento endodôntico, foi observada comunicação entre o canal radicular e a lesão periapical, sugerindo uma lesão de origem endodôntica. O tratamento endodôntico foi realizado e, após oito meses de acompanhamento, foi possível observar regressão da lesão. Este caso evidencia a importância de um diagnóstico diferencial preciso entre PA e CDNP, para planejar o tratamento adequado e favorecer o reparo dos tecidos periodontais.

Benign tumors and tumor-like lesions of the oral cavity and jaws: An analysis of 709 cases.

PURPOSE: The purpose was to examine the prevalence, gender, age and site(s) of odontogenic and nonodontogenic benign tumors, and tumor-like lesions occurring in the oral cavity and jaws in a Turkish population, particularly, in the Eastern Turkey, and to compare findings of this study with other reports. MATERIALS AND METHODS: The data were collected from the files of the Department of Oral and Maxillofacial Surgery and the Department of Oral Pathology, Ataturk University, Turkey, during a 10-year period from January 2005 to January 2015. They were analyzed descriptively regarding prevalence, age, sex, lesion type, and site. RESULTS: A total of 709 benign tumor and tumor-like lesions of the oral cavity, and jaws were selected during a period of 10 years. One hundred and twenty-one of these lesions (17%) were odontogenic benign tumors while 588 (83%) were nonodontogenic benign tumor and tumor-like lesions. CONCLUSIONS: This study revealed that the distribution and characteristics of benign tumors and tumor-like lesions of oral cavity and jaws in the Turkish population, particularly including the Eastern region of Turkey have some differences as well as similarities with the findings of studies in different populations.

Cistos odontogênicos e não odontogênicos diagnosticados no laboratório de patologia oral da UFRJ em um período de 30 anos / Odontogenic and non-odontogenc cysts diagnosed in oral pathology laboratory of UFRJ in a period of 30 years

Os cistos odontogênicos e não-odontogênicos são observados somente nos ossos gnáticos e casuísticas de diferentes regiões têm sido publicadas na literatura de língua inglesa. O objetivo deste trabalho foi determinar a frequência dos cistos odontogênicos e não-odontogênicos diagnosticados no Laboratório de Patologia Oral da UFRJ entre os anos de 1984 até 2015. Essas lesões foram obtidas após revisão dos arquivos da instituição. As características avaliadas foram: (1) tipo de cisto diagnosticado, (2) idade do paciente, (3) gênero do paciente e (4) localização da lesão. Os resultados da frequência de cada tipo de cisto e suas características clínicas foram apresentados de maneira descritiva considerando pacientes de todas as idades, pacientes adultos (maiores que 17 anos) e pacientes jovens (menores que 17 anos). Como resultado, 1141 cistos foram diagnosticados neste período, sendo 1026 (90%) odontogênicos e 105 (10%) nãoodontogênicos. Os cistos odontogênicos mais frequentes foram o cisto radicular (449 casos, 39,3%), cisto dentígero (195 casos, 17%) e o queratocisto odontogênico (147 casos, 12,8%). Os cistos não-odontogênicos mais frequentes foram o cisto do ducto nasopalatino (32 casos, 2,8%), cisto epidermóide (25 casos, 2,1%) e cisto de retenção de muco (17 casos, 1,4%). Os cistos odontogênicos e não-odontogênicos diagnosticas no laboratório de Patologia Oral da UFRJ parecem mostrar um perfil clinicopatológico semelhante ao encontrado em outros estudos do mundo, com poucas variações em relação à idade, gênero e localização preferencial. (AU)

Odontogenic and non-odontogenic cysts are observed only in the gnathic and casuistic bones of different regions have been published in the English-language literature. The objective of this study was to determine the frequency of odontogenic and non-odontogenic cysts diagnosed in the Oral Pathology Laboratory of the Federal University of Rio de Janeiro between 1984 and 2015. These lesions were obtained after reviewing the institution's files. The evaluated features were (1) type of microscopically diagnosed cyst, (2) age, (3) gender, and (4) location of the cyst. The frequency of each type of cyst and its clinical features were descriptivelly presented considering patients of all ages, younger than 17 years, and older than 17 years. One thousand one hundred and forty one cysts were diagnosed in this period, 1026 (90%) of them were odontogenic and 105 (10%) were non-odontogenic. The most frequent odontogenic cysts were radicular cyst (449 cases, 39,3%), dentigerous cyst (195 cases, 17%), and odontogenic keratocyst (147 cases, 12,8%). The most frequent non-odontogenic cyst were the nasopalatine duct cyst (32 cases, 2,8%), epidermoid cyst (25 casos, 2,1%) e mucus retention cyst (17 cases, 1,4%). The odontogenic and non-odontogenic cysts diagnosed in the Oral Pathology Laboratory of the UFRJ seem to show a clinicopathological profile similar to that found in other studies in the world, with few variations in relation to age, gender and preferential location. (AU)

Nonodontogenic Cysts of the Jaws and Treatment in the Pediatric Population.

Nonodontogenic cysts within the jaws are not a common presentation in the pediatric population. Cysts within the pediatric population tend to be developmental and odontogenic in nature. Although nonodontogenic cysts of the jaws are relatively uncommon, it is imperative the clinician understand their clinical behavior and management because failure to do so can result in increased patient morbidity. The nonodontogenic cysts of the jaws that are most often encountered are the central giant cell granuloma, traumatic bone cavity, aneurysmal bone cyst, nasopalatine duct cyst, and nasolabial cyst. This article reviews common clinical findings, radiographic features, histopathologic features, and current treatments of nonodontogenic cysts.