¿Cuál es su diagnóstico?: Osteosarcoma mandibular radioinducido / What would your diagnosis be?: Radiation-induced jaw osteosarcoma

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Osteosarcoma mandibular radioinducido / Radiation-induced jaw osteosarcoma

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Quiste sinovial de articulación temporomandibular: presentación de un caso / Synovial cyst of the temporomandibular joint: presentation of a case

El quiste sinovial localizado en la articulación temporomandibular es una entidad rara, con pocos casos reportados en la literatura médica. Gaisford et al. fueron los primeros autores que informaron de un caso de quiste sinovial, patología que afecta más frecuentemente a articulaciones como la muñeca o la rodilla. Estos quistes están delimitados por células sinoviales, y pueden estar comunicados o ser independientes de la cavidad articular. Se han propuesto varias teorías para explicar la etiología de esta patología, un incremento de la presión en la cavidad articular causado por una inflamación o traumatismo puede ser clave para producir una herniación de la membrana sinovial dando lugar a la entidad. Entre los diagnósticos que hay que considerar ante una tumoración preauricular se encuentran los tumores de parótida, los quistes sebáceos, los gangliones y los quistes sinoviales, entre otros. El tratamiento quirúrgico es el tratamiento frecuentemente propuesto por la literatura, logrando una escasa tasa de recurrencia (AU)

A synovial cyst located in the temporomandibular joint is rare, with few cases reported in the medical literature. Gaisford et al. were the first authors to report a case of a synovial cyst. This a condition that more frequently affects joints such as the wrist or knee. These cysts are delimited by synovial cells, and may be connected to, or be independent of, the joint cavity. Several theories have been proposed to explain the etiology of this disease: an increase in pressure in the joint cavity caused by inflammation or trauma may be the reason that a herniation of the synovial membrane could be produced. Among the diagnoses to be considered when faced with a tumor are pre-auricular parotid tumors, sebaceous cysts, ganglia and synovial cysts, among others. Surgery is the treatment most frequently proposed in the literature, achieving a low rate of recurrence (AU)

Management of fibro-osseous lesions of the craniofacial area. Presentation of 19 cases and review of the literature.

INTRODUCTION: Fibro-osseous lesions constitute a rare benign type of pathology with a non-odontogenic lineage that affect the craniofacial area. According to Waldrom's classification, these lesions are divided into: fibrous dysplasia (FD), cemento-ossifying fibroma (COF) and desmoplastic fibroma (DF). MATERIAL AND METHODS: A retrospective study was performed on patients diagnosed with fibro-osseous lesions of the craniofacial area at the Hospital Universitario La Fe, Valencia, during 1987-2009. A total of 19 cases were collected: 15 cases compatible with an FD diagnosis, 3 cases with a COF diagnosis and 1 case with a DF diagnosis. RESULTS: In the differential diagnosis, entities having similar clinical manifestations in the maxillofacial area with possible involvement of teeth or manifestations present as an asymptomatic radiolucent image should be ruled out. We hereby present the management and development of patients treated in our hospital for fibro-osseous lesions. CONCLUSIONS: Fibro-osseous lesions share many clinical and radiological characteristics in common, with histological features confirming the nature of the lesion. Management of patients should be individualized and case-specific, assessing the clinical evolution of each case and taking into account the benign nature and growth behavior of this type of tumors.