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Search Results: 1 - 10 of 6367 matches for " tumor mandibular "
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Tumor odontógeno adenomatoide en región mandibular
Sánchez Cabrales,Ernesto; Vila Morales,Dadonim; Felipe Garmendia,ángel Mario; Serra Ortega,Alain; Torres Gómez de Cádiz,Alma;
Revista Cubana de Estomatolog?-a , 2010,
Abstract: the adenomatoid odontogenic tumor is an uncommon neoplasm derivative of the odontogenic epithelium containing canalicular structures with inductor modifications of variable intensity in the conjunctival tissue. it is a slow growth lesion and no much invasive but that may to be similar to other odontogenic lesions more aggressive including the dentigerous cyst and the ameloblastoma among others. its classical location (upper canine area) guides us to diagnosis and its duct histological pattern is very typical of this tumor. other tumors included in this group are the ameloblastic fibroma, the ameloblastic odontoma, the calcified odontogenic cyst and composed and complex odontomas. this group of lesions may or not to have formations of hard tissue inside. thus, authors present the case of a patient presenting with this type of tumor making a histopathology study, a literature review on this benign odontogenic tumor and its clinical radiographic features, treatment, as well as the differential diagnoses to be into account.
Tumor odontógeno adenomatoide en región mandibular Adenomatoid odontogenic tumor in mandibular region
Ernesto Sánchez Cabrales,Dadonim Vila Morales,ángel Mario Felipe Garmendia,Alain Serra Ortega
Revista Cubana de Estomatolog?-a , 2010,
Abstract: El tumor odontogénico adenomatoide es un tumor poco frecuente derivado del epitelio odontontogénico, que contiene estructuras canaliculares con modificaciones inductivas de intensidad variable en el tejido conjuntivo. Es una lesión de crecimiento lento y poco invasiva pero que se puede asemejar a otras lesiones odontógenas de mayor agresividad como el quiste dentígero y el ameloblastoma entre otros. Su localización clásica (área de caninos superiores) nos orienta al diagnóstico y su patrón histológico ductiforme es muy propio de este tumor. Otros tumores que se encuentran dentro de este grupo son el fibroma ameloblástico, el odontoameloblastoma, el quiste odontógeno calcificante y los odontomas compuesto y complejo. Este grupo de lesiones puede o no tener formaciones de tejido duro dental dentro de ellos. Por esta razón, se presenta un paciente con este tipo de tumor, al que se le realizó estudio histopatológico, se revisó la literatura acerca de este tumor odontogénico benigno y sus características clínicas, radiográficas, tratamiento, así como los diagnósticos diferenciales que se deben tener en cuenta. The adenomatoid odontogenic tumor is an uncommon neoplasm derivative of the odontogenic epithelium containing canalicular structures with inductor modifications of variable intensity in the conjunctival tissue. It is a slow growth lesion and no much invasive but that may to be similar to other odontogenic lesions more aggressive including the dentigerous cyst and the ameloblastoma among others. Its classical location (upper canine area) guides us to diagnosis and its duct histological pattern is very typical of this tumor. Other tumors included in this group are the ameloblastic fibroma, the ameloblastic odontoma, the calcified odontogenic cyst and composed and complex odontomas. This group of lesions may or not to have formations of hard tissue inside. Thus, authors present the case of a patient presenting with this type of tumor making a histopathology study, a literature review on this benign odontogenic tumor and its clinical radiographic features, treatment, as well as the differential diagnoses to be into account.
Fibroma odontogénico central, tipo WHO: Reporte de un caso y revisión de la literatura Central odontogenic fibroma, WHO type: A case report and literature review
Carla Mu?oz Torres,Pablo Reyes Olave,Carolina álvarez Novoa,Bernardo Venegas Rojas
Revista Espa?ola de Cirugía Oral y Maxilofacial , 2010,
Abstract: El fibroma odontogénico central es una neoplasia benigna muy poco frecuente. Clásicamente se ha dividido en dos variantes histológicas: un tipo pobre en epitelio y otro tipo rico en epitelio con focos de material calcificado. En la mayoría de los casos muestra un crecimiento lento y progresivo con o sin sintomatología. Radiográficamente es habitual observar una imagen radiolúcida y unilocular que en raras ocasiones exhibe radiolucidez mixta. El tratamiento indicado en todos los casos es la enucleación del tumor. Se reporta el caso de una mujer de 36 a os de edad, sin antecedentes mórbidos, con una lesión asintomática de radiolucidez mixta, expansiva de ambas corticales óseas, en la zona del cuerpo y ángulo mandibular izquierdo, asociada a un tercer molar incluido. Basándose en el estudio histopatológico inicial, se diagnosticó como fibroma odontogénico, y con el posterior tratamiento definitivo de la lesión, se determinó la subvariedad tipo OMS. La paciente no ha tenido recidiva en 16 meses de seguimiento. The central odontogenic fibroma is a rare benign neoplasm. Classically has been divided into two histological variants, a poor type epithelium and other rich epithelium with foci of calcified material. It shows in most cases, a slow and progressive growing with or without symptoms. Radiographically it is common to observe a radiolucent, unilocular, rarely exhibiting mixed radiolucency. The treatment in all cases is enucleation of the tumor. We report the case of a 36 year old woman, no morbid history, with an asymptomatic lesion of mixed radiolucency, cortical bone expansion in the area of the body and the left mandibular angle associated with a third molar. Based on the initial histopathology it was diagnosed as odontogenic fibroma and subsequent definitive treatment of the injury rate was determined sub manifold WHO. The patient had no recurrence at 16 months of follow-up.
Leiomiosarcoma intraóseo mandibular Mandibular intraosseous leiomyosarcoma
A. López Ceres,F. Ruiz Delgado,L. Bermudo A?ino
Revista Espa?ola de Cirugía Oral y Maxilofacial , 2007,
Abstract: Los leiomiosarcomas son neoplasias malignas mesenquimales derivadas del músculo liso. Los leiomiosarcomas intraóseos mandibulares primarios son muy raros. Se cree que proceden de la musculatura lisa de la pared de los vasos sanguíneos. Pueden presentarse a cualquier edad, sin ninguna predilección y afectan preferentemente a hombres, con una relación hombre-mujer de 2:1. La excisión quirúrgica completa está asociada con una menor recidiva y mayor supervivencia. La radioterapia es efectiva en el tratamiento de la enfermedad microscópica residual. Presentamos el caso de un leiomiosarcoma intraóseo mandibular. Leiomyosarcomas are malignant mesenchymal neoplasms of smooth muscle differentiation. Leiomyosarcomas occurring in the jawbones are exceedingly rare, and are believed to arise from the musculature of the tunica of blood vessels. Intraoral cases may present at any age with no predilection for any age group. They occur predominantly in males, with a male to female ratio of approximately 2:1. Complete surgical excision is associated with low recurrence and longer survival. Radiotherapy is effective in the treatment of microscopic disease.
MANDIBULAR SWING APPROACH FOR A RECURRENT PARA PHARYNGEAL SPACE TUMOR – REPORT OF A CASE.
Balasubramanian Thiagarajan,Karthika A
Otolaryngology Online Journal , 2011,
Abstract: Para pharyngeal space tumors , most of them benign, account for some 0.5% of tumors of head & neck. The importance of these tumors lie mainly in two aspects- on the one hand, the difficulty of early diagnosis & on the other hand the extreme complications of performing surgery in Para pharyngeal region.This article discusses a clinical case of recurrent parapharyngeal tumor. A 32 yr old man presented with a recurrent left side neck swelling,4cm in diameter,which was subsequently confirmed as schwannoma by FNAC. Para pharyngeal tumor was successfully removed by mandibular swing approach &excision technique. His post operative course was uneventful &the pre operative clinical symptoms such as dysphagia &dysphnea completely resolved after surgery.
锥形束CT在下颌骨肿瘤和肿瘤样病变检查中的应用
Application of CBCT in the Diagnosis of Mandibular Tumor and Tumor-like Lesions.

张德明, 王江涛
ZHANG De-ming
, WANG Jiang-tao.

- , 2015,
Abstract: 摘要 目的:探讨锥形束计算机体层摄影术( CBCT)在下颌骨肿瘤和肿瘤样病变检查中的应用价值。方法:回顾性分析16例经病理证实的下颌骨肿瘤和肿瘤样病变的CBCT资料,包括轴面、冠状面、矢状面、曲面重建图像及VR图像,评价病变的大小、形态、范围、内部结构特征,及其与邻近牙齿、下颌神经管的解剖关系,并与术中所见相比较。结果:13例病变中,牙瘤6例,成釉细胞瘤3例,角化囊性瘤3例,骨化性纤维瘤2例,骨纤维异常增殖症2例,所有病例的形态、范围、内部结构特征,以及与邻近牙齿、下颌神经管的关系显示清楚,与术中所见一致。结论:CBCT扫描能够全面提供下颌骨肿瘤和肿瘤样病变的影像学信息,可作为术前常规检查
Piezoelectric-assisted removal of a benign fibrous histiocytoma of the mandible: An innovative technique for prevention of dentoalveolar nerve injury
Maximilian EH Wagner, Majeed Rana, Wolfgang Traenkenschuh, Horst Kokemueller, André M Eckardt, Nils-Claudius Gellrich
Head & Face Medicine , 2011, DOI: 10.1186/1746-160x-7-20
Abstract: A 41 year-old male was admitted to our hospital because of slowly progressive right buccal swelling. After further radiographic diagnosis surgical removal of the yellowish-white mass was performed. Histologic analysis showed proliferating histiocytic cells with foamy, granular cytoplasm and no signs of malignancy. The tumor was positive for CD68 and vimentin in immunohistochemical staining. Therefore the tumor was diagnosed as primary benign fibrous histiocytoma. This work provides a new treatment device for benign mandibular tumour disease. By using a novel piezoelectric-assisted cutting device, protection of the dentoalveolar nerve could be achieved.According to the WHO histological classification of tumors, primary benign fibrous histiocytoma (BFH) of bone is defined as a benign lesion composed of spindle-shaped fibroblasts, arranged in a storiform pattern, with a variable admixture of small, multinucleated osteoclast-like giant cells. Foamy cells (xanthoma), chronic inflammatory cells, stromal haemorrhages and haemosiderin pigment are also commonly present [1]. According to this classification, there are less than 100 reported cases of BFH worldwide and only six reported cases in the mandible [2-7]. It is usually found in long bones, especially femur and tibia, and the pelvic bone, but may occur in virtually any bone. However, the precise removal especially in close vicinity to nerval structures is challenging. In our case resection of a mandibular tumor by preventing injury to the dentoalveolar nerve is difficult.The presented case enlarges the indications for the use of ultrasonic devices in tumor surgery and thus emphasizes the beneficial effects of this technique in bone cutting close to nerval structures.A 41-year old Caucasian man was referred to our clinic for evaluation of a slowly progressive swelling of his right mandible. A panoramic radiograph (Figure 1) showed a well-demarcated multilocular radiolucent lesion with a reactive hyperostotic border in t
Pathological fractures of the mandible: A report of ten cases and a review of the literature  [PDF]
Badreddine Abir, Alae Guerrouani, Abdeljalil Abouchadi
Open Journal of Stomatology (OJST) , 2013, DOI: 10.4236/ojst.2013.38070
Abstract:

Introduction: Pathological fractures of the mandible are rare. They account for approximately 2% of all mandibular fractures. The main purpose of the study is to report our experience concerning this condition and to analyse data and review the literature available. Material and methods: This study reviewed retrospectively the records of patients who presented to the department of Plastic and Maxillofacial surgery between 2000 and 2008 with a pathological fracture of the mandible. The collected data included age, sex, mechanism of injury, aetiology, anatomic site of fracture, treatment and complications. Results: There were 10 patients with an average age of 48 years and 10 months. There were three cases of fracture due to a local malignancy, two cases of osteoradionecrosis, two cases of mandibular cysts, one patient presenting a mandibular histiocytosis, one patient with a metastatic carcinoma (Thyroid), and one case related to mandibular atrophy. Most common mechanisms of injury were chewing and falls. Pathological fractures were often located in the body of the mandible. A surgical approach was performed in most cases. Conclusion: Surgical management of pathological fractures of the mandible depends largely on the aetiology. Complications occur more often because of local condition and bad oral hygiene.

Manejo quirúrgico del ameloblastoma Surgical management of ameloblastoma
Adaia Valls,Esther Montané,Coro Bescós,Manel Saez
Revista Espa?ola de Cirugía Oral y Maxilofacial , 2012, DOI: 10.1016/j.maxilo.2012.02.001
Abstract: El ameloblastoma es un tumor odontogénico de estirpe epitelial. Aunque se clasifica como una tumoración benigna, suele ser localmente agresiva presentando elevada invasión local, con gran tendencia a la recidiva y con posibilidad metastásica ocasional. Se manifiesta preferentemente durante la tercera, cuarta y quinta décadas de la vida, sin predilección por razón de sexo, aunque puede darse en cualquier grupo de edad, incluidos los ni os. La mayoría de los ameloblastomas se encuentran sobre todo en mandíbula (al nivel del ángulo y rama). En el tratamiento se debe valorar su tipología clínica (sólido, multiquístico, uniquístico, mixto o periférico), su localización y el tama o del tumor, así como la edad y las condiciones clínicas del paciente. Presentamos una revisión de los pacientes afectos de ameloblastomas tratados en nuestro Centro durante los últimos 10 a os. Se aportan datos acerca de su aparición clínica, sus características histológicas, el manejo terapéutico realizado y analizamos el seguimiento y comparamos la aparición de recidivas en los pacientes presentados. Las características clínicas, incluso si se complementan con radiografías y/o muestras histológicas, no son siempre determinantes del comportamiento biológico y, por tanto tampoco lo son del pronóstico de un ameloblastoma individual. The ameloblastoma is an odontogenic tumour of epithelial origin. Although it is classified as benign, there is usually aggressive local invasion, a great tendency to recurrence, and occasional metastatic potential. It generally appears during the third, fourth and fifth decades of life, without gender predilection, although it can occur at any age, including in children. Ameloblastomas are mostly found in the mandible (angle and branch). In treatment, its clinical type (solid, unicystic, desmoplastic, mixed or peripheral), its location and size, must be assessed, as well as the age and clinical condition of the patient. We present a review of patients diagnosed and treated for ameloblastoma in our hospital during the last 10 years. We present data on clinical appearance, histological characteristics, and therapeutic management, and we analyse and compare the rate of recurrence in these patients. The clinical features, even if they are supplemented with radiographs and/or histological samples, are not always biological determinants of its behaviour, or of the individual prognosis of the ameloblastoma.
CARCINOMA ESCAMOCELULAR INTRAóSEO PRIMARIO MANDIBULAR: REPORTE DE CASO CARCINOMA MANDIBULAR INTRA-óSSEIO PRIMáRIO DE CéLULAS ESCAMOSAS: RELATO DO CASO PRIMARY INTRAOSSEOUS SQUAMOUS CELL CARCINOMA OF THE MANDIBLE: CASE REPORT
LUZ ADRIANA SABOGAL G.,ALEJANDRA ROJAS,JOSé ANTONIO VéLEZ S
Revista Med , 2009,
Abstract: El carcinoma escamocelular intraóseo primario mandibular se encuentra, de acuerdo con la clasificación de la Organización Mundial de la Salud, dentro de los carcinomas odontogénicos. Se trata de una neoplasia poco común, con una relación hombre:mujer de 3,5:1 y una mayor frecuencia de presentación entre la quinta y la sexta década de vida. Su localización más común es en la región posteroinferior mandibular, siendo localmente agresivo, con metástasis a ganglios linfáticos regionales. Debido a que su comportamiento es intraóseo y a que no presenta lesiones iniciales intraorales, su diagnóstico clínico es difícil, durando largos periodos sin que se sospeche su presencia. Confirmar su diagnóstico requiere de un estudio anatomopatológico que detecte la presencia de células epiteliales carcinomatosas intraóseas. Imagenológicamente se evidencia como una lesión quística atípica, mal definida en la mayoría de los casos, radiolúcida y con osteolisis. El tratamiento de elección, con fines curativos, es la realización de una exéresis con amplios márgenes de seguridad oncológica y una posterior cirugía reconstructiva. Se presenta en este artículo el caso de un paciente de 31 a os de edad con un carcinoma escamocelular intraóseo primario de la mandíbula tipo sólido, al que se le realizó una resección mandibular derecha en bloque, seguida de cirugías reconstructivas hasta obtener un adecuado resultado funcional y estético. O carcinoma de preliminar intrabony escamocelular a mandibular está, no acordo com a classifica o da organiza o World-wide da saúde, dentro dos carcinomas dos odontogénicos. Neoplasia é um pouco comum, com um homem da rela o: mulher de 3,5:1 e uma freqüência mais grande da apresenta o entre a quinta e sexta década da vida. Sua posi o mais comum está na regi o do posteroinferior a mandibular, sendo localmente aggressive, com o metástasis ao ganglia lymphatic regional. Porque seu comportamento é intrabony e àquele n o se apresentar/exposi o os ferimentos iniciais intraoral, seu diagnóstico clínico é períodos longos difíceis, durando sem sua presen a é suspeitado. Confirmar seu diagnóstico requer de um estudo do anatomopatológico que detecte a presen a de pilhas epithelial dos carcinomatosas intrabony. Imagenológicamente é demonstrado como um ferimento atypical do quística, bad definido em a maioria dos casos, radiolúcida e com o osteolisis no formulário do L. O tratamento da elei o, com alvos dos curativos, é a realiza o de um exéresis com margens de seguran a amplas do oncológica e uma cirurgia mais atrasada do reconstructiva. O exemplo de um
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