Presencia de lesiones quísticas en sacos pericoronarios de terceros molares mandibulares / Presence of cystic lesions in pericoronary sacs of mandibular third molars

Introducción: a pesar de que un tercer molar no erupcionado repre- senta un riesgo de formación quística, la práctica clínica desestima el análisis histopatológico de los folículos de dichos molares. Objetivo: identificar la frecuencia de lesiones quísticas en los sacos pericoronarios de terceros molares mandibulares. Material y métodos: estudio des- criptivo, transversal, analítico y observacional, en donde se incluyeron sacos pericoronarios de terceros molares mandibulares para su análisis histopatológico, descripción de características clínico-radiográficas y su asociación con la presencia de cambios histológicos o lesiones quís- ticas. Resultados: se incluyeron 48 muestras de sacos pericoronarios, la histopatología de los sacos pericoronarios mostró que 83.3% tenían algún tipo de alteración: 13 quistes paradentales (27.1%), cuatro quistes dentígeros (8.3%), 12 folículos hiperplásicos (25.0%) y 11 folículos inflamados (22.9%). La presencia de lesiones quísticas en la población fue de 35.4%. Se detectó asociación estadísticamente significativa entre el sexo y la presencia de lesiones quísticas (p = 0.039) y entre el nivel de erupción y la presencia de cambios histológicos (p = 0.046). Con- clusiones: la frecuencia de lesiones quísticas o cambios histológicos en folículos de terceros molares mandibulares es alta, principalmente en molares parcialmente erupcionados o submucosos y sin importar la ausencia de sintomatología o alteraciones radiográficas (AU))

Introduction: although a non-erupted third molar represents a risk of cystic formation; clinical practice rejects the histopathological analysis of the follicles of said molars. Objective: identify the frequency of the histopathological changes in pericoronary sacs of mandibular third molars. Material and methods: descriptive cross- sectional, observational and analytic study, where pericoronary sacs of mandibular third molars were included for histopathological analysis, description of clinical-radiographic characteristics and their association with the presence of histological changes or cystic lesions. Results: 48 samples of pericoronary sacs were included, the histopathology of the pericoronary sacs showed 83.3% had some type of alteration: 13 paradental cysts (27.1%), four dentigerous cysts (8.3%), 12 hyperplastic follicles (25.0%) and 11 inflamed follicles (22.9%). The presence of cystic lesions in the population was 35.4%. A statistically significant association was detected between sex and the presence of cystic lesions (p = 0.039); and between the level of eruption and the presence of histological changes (p = 0.046). Conclusions: the frequency of cystic lesions or histological changes in mandibular third molar follicles is high, mainly in partially erupted or submucosal molars and regardless of the absence of symptoms or radiographic alterations (AU)

[Juvenile paradental cysts in children after mandible distraction: case-control study and clinical cases presentation].

Seventy-five children aged 6-17 years (mean age 9.8±4.1 years) that received mandible distraction (MD) at the age of 0-17 years (mean age at MD 6.1±4.3) were included in the study. Indication for MD were hemifacial microsomia (n=41), Goldenhar syndrome (n=4), Robin sequence (n=10), Treacher, Collins syndrome (n=7) or acquired mandible underdevelopment (n=13). Control groups consisted of 22 children aged 5-14 years (mean age 7.0±3.7 years) with mandible underdevelopment of similar origin (hemifacial microsomia (n=15), Goldenhar syndrome (n=2), Robin sequence (n=4), Treacher, Collins syndrome (n=1)) with no history of MD and 80 healthy children aged 6-10 years (mean age 7.1±2.2 years). Case-control study results proved MD to be the risk factor for juvenile paradental cysts (JPCs) with the risk more prominent in early MD cases. JPCs often do not manifest clinically and may resolve spontaneously but in refractory cases lesion curettage without endodontic treatment is an adequate approach, as JPCs are usually not associated with pulp necrosis.

Lateral and median cysts of the neck.

THE AIM OF THE STUDY: was to present clinical picture, indications for surgery, immediate and remote results of surgical treatment for lateral and median cysts of the neck. MATERIAL AND METHODS: A total of 17247 patients were operated between 1 January 1990 and 31 December 2011 for neck tumors. RESULTS: Neck cysts were diagnosed in 34 (0.2%) patients, including lateral in 12 (35.3%) and median in 22 (64.7%). Lateral cyst once descended to the mediastinal. Nodular goitres were diagnosed in 17 (50%) of them--with the lateral cysts 4x and median cysts 13x. Guided fine-needle aspiration biopsy of the cyst-like lesions revealed the presence of protein masses in all patients. The lesions were found to have inflammatory character in 6 patients (17.6%) regarding median cysts (5x) or lateral cyst (1x). Out of them, 3 patients developed purulent inflammatory process. All patients were operated. The operation consisted of radical resection of the cyst only or plus partial resection of both thyroid lobes and total resection of pyramidal lobe if concomitant goitre was found. Two patients required one-stage resection of the enlarged lymph nodes in the neck. Suspected focus of thyroid papillary cancer was found by intra-operative examination in neck median cyst wall in one patient. However, paraffin tests did not confirm the suspicion. Another patient was found by histopathological examination to have active tuberculotic process within both lateral cyst and lymph nodes. The patient received intensive antituberculotic treatment postoperatively. CONCLUSIONS: 1. Median cysts of the neck are more often accompanied by thyroid tumor-like goitres than lateral cysts. 2. Radical resection of the cysts in operative treatment results in good long term patient condition and prevent in recurrence of the illness.

Quiste bucal mandibular infectado: presentación de un caso clínico / Mandibular infected buccal cyst: report of a clinical case

El quiste bucal mandibular infectado es un quiste inflamatorio que se presenta en niños entre 6 y 10 años de edad. Es una patología poco frecuente que afecta a los primeros o segundos molares inferiores semierupcionados. El objetivo del presente trabajo es presentar uncaso de quiste bucal mandibular infectado que a pesar de ser una entidad que presenta un comportamiento biológico benigno, pueden alcanzar grandes proporciones si no se diagnostican en forma temprana ni se tratan apropiadamente.

Botryoid odontogenic cyst: clinical and pathological analysis in relation to recurrence

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Objetives. Botryoid odontogenic cyst (BOC) is considered as an unusual multilocular variant of lateral periodontal cyst (LPC). Review of the literature indicates that this lesion has higher risk of recurrence than LPC, but objetive reasonsare still unknown. The aim of this study is identify main clinical and pathological variables associated with the risk of recurrence. Study design. A complete literature review about cases of BOC was made, from its first description up to the year 2006. A total of 67 cases of BOC were identified from year 1973 (first case) to the last publication in 2005.Results. 85.2% of the BOCs were located in the jaw, affecting to women (54.8% of the cases) in the fifth decade of the life. This lesion shows a well- circumscribed unilocular (60%) or multilocular (40%) radiolucency. Recurrence rate of cases with follw-up data was 32,4%. Conclusions. Size and multilocular patterns could be the main factors associated to recurrence in BOC (AU)

Quiste paradental en niños: reporte de tres pacientes / Periodontal cyst in children: report of three patients

El quiste paradental se desarrolla a partir del epitelio odontogénico de la zona superficial del ligamento periodontal de un diente vital. Se localiza por vestibular y distal de un molar inferior semierupcionado, más frecuentemente el tercer molar, con una historia asociada de pericoronaritis. Un quiste similar ocurre en la superficie vestibular de primeros molares en niños denominándose quiste mandibular bucal infectado. Se describen clínica, radiográfica e histológicamente tres situaciones clínicas de quistes paradentales (Mandibular bucal infectado)

Quiste paradental en niños: reporte de tres pacientes / Periodontal cyst in children: report of three patients

El quiste paradental se desarrolla a partir del epitelio odontogénico de la zona superficial del ligamento periodontal de un diente vital. Se localiza por vestibular y distal de un molar inferior semierupcionado, más frecuentemente el tercer molar, con una historia asociada de pericoronaritis. Un quiste similar ocurre en la superficie vestibular de primeros molares en niños denominándose quiste mandibular bucal infectado. Se describen clínica, radiográfica e histológicamente tres situaciones clínicas de quistes paradentales (Mandibular bucal infectado) (AU)

Periodontal inflammatory and cystlike lesions in BDF1 and B6C3F1 mice.

Periodontal inflammatory and cystlike lesions were detected in aged BDF1 and B6C3F1 mice. Lesions were unilateral, single, and located in the labial region of the incisor teeth. The largest cystlike lesion deformed the skull. Histologically, the cystlike lesions were classified into three types: predominantly an inflammatory reaction, predominantly a cyst formation, and a mixed lesion. These periodontal inflammatory and cystlike lesions were pathogenetically similar and were considered sequential changes; the lesions showing both cyst formation and inflammatory reaction seemed to be intermediate along a path toward formation of large cysts. The cysts probably were derived from periodontal tissue and developed as a result of inflammatory reaction to foreign bodies, including hair. The term "murine periodontal cyst" is proposed for this lesion. Detailed pathogenetic studies on murine odontogenic cystic lesions may be warranted.

Lateral periodontal cyst. Multifactorial analysis of a previously unreported series.

The objective of the present study was to review a series of 23 lateral periodontal cysts and 2 botryoid odontogenic cysts retrieved from the files of the State University of New York at Buffalo (SUNY) Oral Pathology Biopsy Service for epidemiologic characteristics as well as radiographic findings, clinical presentation, histopathologic features, and management. This study corroborated some previously established characteristics of the lesion but also revealed some surprising aberrations. A significant difference in the age range and mean age by gender was detected with the Student's t test within this population at the 0.05 level. The classic presentation of a lateral periodontal cyst seems to be that of an asymptomatic, small, ovoid, well-corticated radiolucency that occurs in an interradicular locus in the mandibular premolar segment of a middle-aged man. However, lateral periodontal cysts may manifest with pain and cause cortical perforation, may present as large expansile radiolucencies, may arise in the maxillary molar segment, and may develop in young females. Because of the tendency for aggressiveness of other lesions that may present with a similar picture, it is important to establish the final diagnosis of lateral periodontal cyst on a histologic basis in conjunction with the clinical and radiographic findings.

Odontogenic cystic lesions of the jaws.

In a period of ten years 64 patients with odontogenic cystic lesions were found in 80,408 patients attending the Dental Out-Patient Department, All India Institute of Medical Sciences Hospital, New Delhi. Two-thirds of the lesions were found in male patients and no neoplastic lesion was recorded in the maxilla. There were more periodontal cysts in the maxillary than in the mandibular incisor region. The majority of lesions were found in age groups 10-40 years.