Trigeminal neuralgia is a well-characterized disorder of high prevalence among the current population. It may be caused, among many other causes, by a tumor which contacts with the trigeminal nerve, often of large volume. We present the case of a middle-aged woman without any remarkable medical background who suffered a trigeminal neuralgia caused by a subcentimeter tumor which appeared to be a meningioma. Some small tumors like this one may be symptomatic whereas larger ones will not. We discuss the pathogenesis and characterization of the trigeminal neuralgia in such cases proposing some mechanisms that could be involved in the development of a secondary neuralgia.
La neuralgia del trigémino es una patología bien descrita y de alta prevalencia en la población actual. Puede estar causada, entre otras muchas causas, por un tumor, habitualmente de gran tamaño, que contacte con el nervio trigeminal. Presentamos el caso de una mujer de edad media sin antecedentes de interés que padecía una neuralgia trigeminal causada por un meningioma subcentimétrico. Algunos tumores pequeños como este pueden ser sintomáticos mientras que otros de mayor tamaño no. Se discuten la patogenia y las características de la neuralgia trigeminal en tales casos proponiendo algunos mecanismos que podrían estar relacionados con el desarrollo de una neuralgia secundaria.
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