Cases reported "Neuritis"

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1/2. Surgical findings in idiopathic trigeminal neuropathy mimicking a trigeminal neurinoma.

    Idiopathic trigeminal neuropathy is a benign disorder where the main clinical feature is facial numbness limited to the territory of one or more divisions of the trigeminal nerve, persisting for a few weeks to several years and in which no underlying disease can be identified. The case of a 37-year-old man with a brief history of sensory and motor trigeminal symptoms who showed magnetic resonance imaging (MRI) findings consistent with a small trigeminal neurinoma is reported. The patient was operated on but no tumour could be found during surgery and a biopsy was taken from the portio major. Pathological diagnosis was chronic non granulomatous inflammatory reaction with areas of coagulation necrosis. Control MRI showed complete resolution of the trigeminal abnormalities. It is concluded that in patients with MRI findings suggestive of a small trigeminal schwannoma, benign idiopathic trigeminal neuropathy should also be considered in the differential diagnosis. A conservative approach with sequential MRI studies may avoid an unnecessary surgical exploration.
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ranking = 1
keywords = schwann
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2/2. Peripheral neural involvement in cutaneous leishmaniasis. A pathologic study of human and experimental animal lesions.

    Peripheral neural involvement in cutaneous leishmaniasis has recently been recognized. A man presented with several tender hyperesthetic skin nodules. Histopathologic examination confirmed the diagnosis of cutaneous leishmaniasis. Of most interest was the presence of a striking lymphohistocytic inflammatory infiltrate around and within cutaneous nerves in addition to demonstrable leishmania organisms in the perineural space. This observation led to a detailed histopathologic evaluation of leishmanial skin lesions that developed in 13 mice after subcutaneous injection with leishmania major promastigotes. Varying degrees of neural involvement was noted in skin lesions from nine animals. In some lesions, in addition to inflammatory cells in the nerves, organisms were demonstrable within probable schwann cells. Three pathologic stages of dermal neural involvement were identified, namely, an early, intermediate, and late stage, depending on the severity of damage; however no correlation was found between the pathologic stage and the duration of the leismanial skin lesion of a specific animal.
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ranking = 4.3174602735536
keywords = schwann cell, schwann
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