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      A extremely rare case of cervical intramedullary granuloma due to Brucella accompanied by Chiari Type-1 malformation

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          Abstract

          Chiari Type-1 malformation is displacement of the cerebellar tonsils through the foramen magnum into the cervical spine and usually does not exceed the level of C2. It is 50-70% associated with syringomyelia. Nervous system involvement due to brucellosis is called neurobrucellosis, and neurological involvement rate has been reported an average of 3-5%, ranging between 3% and 25% at different series. Intramedullary abscess or granuloma due to Brucella is extremely rare. Hence far, six cases have been reported in the literature and only two of these cases were reported as intramedullary granuloma. This case is presented in order to remind the importance of the cervical cord granuloma which was presented once before in the literature and to emphasize the importance of evaluation of patient history, clinical and radiological findings together in the evaluation of a patient.

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          Most cited references16

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          Neurobrucellosis: clinical and therapeutic features.

          Eighteen patients with neurobrucellosis are described. Eleven patients had meningitis alone or with papilledema, optic neuropathy, or radiculopathy. Four patients had meningovascular complications manifested by stroke or intracerebral hemorrhage from a presumed mycotic aneurysm. Two patients had parenchymatous dysfunction, including a child who had a cerebellar syndrome without evidence of direct infection of the central nervous system. One patient presented with polyradiculopathy. Twelve of 16 patients had pleocytosis; none had cell counts greater than 419 x 10(6)/L. Most patients had hypoglycorrhachia and elevated levels of protein in the cerebrospinal fluid (CSF). Results of an agglutination test for Brucella in serum were positive for all patients. Six of 16 patients had positive blood cultures, and four of 14 had positive CSF cultures. Antimicrobial treatment included concurrent administration of two or more of the following drugs: streptomycin, tetracycline (or doxycycline), rifampin, and trimethoprim-sulfamethoxazole. Eleven patients fully recovered. Five patients were left with residual neurological deficits. Four of these patients suffered permanent hearing loss, one of whom also had significant loss of vision in one eye. One elderly senile patient with meningovascular brucellosis remained in a vegetative state despite receiving antimicrobial therapy for 6 months. One patient died due to rupture of a mycotic aneurysm within 7 days of initiation of therapy. One other patient was treated after sustaining an intracerebral hemorrhage, but this patient's condition was diagnosed only after discharge.
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            Neurobrucellosis: clinical and neuroimaging correlation.

            Manifestation of nervous system involvement by neurobrucellosis, a treatable infection, is not well documented. We investigated patterns of nervous system involvement and determined if neuroimaging abnormalities correlated with clinical manifestations of neurobrucellosis. We reviewed 23 MR imaging studies (17 of brain, six of spine) and seven CT scans of brain in 23 patients (14 male and nine female patients; age range 17-71 years) with positive Brucella titers in their serum and CSF. Twelve patients had central nervous system (CNS) involvement, four had peripheral nervous system (PNS) involvement, two had combined PNS and CNS involvement, and five had isolated hearing loss. Imaging findings were variable: five of seven brain CT studies were normal, and 10 of 23 MR studies were normal (eight brain, one thoracic, one lumbar). One brain CT study showed subthalamic hemorrhage, mild perivascular enhancement, left caudate lacunae, and diffuse white matter changes. One other brain CT study showed enhancement of the tentorium in addition to white matter changes. Abnormal MR findings were basal meningeal enhancement (n = 3), lumbar nerve root enhancement (n = 3), granuloma of the suprasellar region (n = 1), diffuse white matter changes (n = 7), and spinal cord atrophy (n = 1). All patients improved after treatment with three antimicrobial drugs for 3-12 months. Seven patients had follow-up imaging; the enhancement disappeared but the white matter and ischemic changes persisted despite almost complete clinical recovery. Clinical-radiologic correlation in neurobrucellosis varies from a normal imaging study despite positive clinical findings, to a variety of imaging abnormalities that reflect either an inflammatory process, an immune-mediated process, or a vascular insult.
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              Clinical categories of neurobrucellosis. A report on 19 cases.

              Brucellosis rarely can present with involvement restricted to the nervous system. We describe a total of 19 cases of neurobrucellosis in whom the clinical presentation lay in three distinct categories. The first was an acute presentation with meningoencephalitis. The disease also presented in a chronic form where the brunt of the illness can either be in the peripheral or the central nervous system (CNS). The chronic peripheral form is that of a proximal polyradiculoneuropathy. The central form is that of diffuse CNS involvement, predominantly with myelitis or cerebellar involvement with or without cranial nerve palsies. Although the two chronic forms, 'peripheral' and 'central', are distinct, some overlap is possible. This was not observed for the acute form. The pathology of the three presentations may be different, being a direct effect of infection in the acute form, and an immune-related process, possibly demyelinating in nature, in the chronic forms. The response to treatment in the acute and chronic forms is also different, being much better in the acute form. Awareness of the condition and performance of the appropriate serological tests will differentiate neurobrucellosis from other chronic CNS infections, especially tuberculosis and neurosyphilis.
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                Author and article information

                Journal
                Asian J Neurosurg
                Asian J Neurosurg
                AJNS
                Asian Journal of Neurosurgery
                Medknow Publications & Media Pvt Ltd (India )
                1793-5482
                2248-9614
                Jul-Sep 2014
                : 9
                : 3
                : 173-176
                Affiliations
                [1]Department of Neurosurgery, Faculty of Medicine, Baskent University, Adana, Turkey
                [1 ]Department of Infection Diseases, Faculty of Medicine, Baskent University, Adana, Turkey
                Author notes
                Address for correspondence: Dr. Kadir Tufan, Department of Neurosurgery, Faculty of Medicine, Başkent University, Adana Uygulama ve Araştırma Hastanesi, Dadaloglu Mahallesi, 39. Sokak No 6, Adana 01250, Turkey. E-mail: kadirtufan@ 123456hotmail.com
                Article
                AJNS-9-173
                10.4103/1793-5482.142740
                4323904
                2482add7-d502-4908-ba74-1dfa6cef1bad
                Copyright: © Asian Journal of Neurosurgery

                This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Categories
                Case Report

                Surgery
                brucella,cervical region,chiari type-1 malformation,spinal intramedullary granuloma
                Surgery
                brucella, cervical region, chiari type-1 malformation, spinal intramedullary granuloma

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