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  • Title: Rhombencephalitis due to Listeria monocytogenes infection with GQ1b antibody positivity and multiple intracranial hemorrhage: a case report and literature review.
    Author: Zhao Y, Xu C, Tuo H, Liu Y, Wang J.
    Journal: J Int Med Res; 2021 Apr; 49(4):300060521998568. PubMed ID: 33866842.
    Abstract:
    Listeria monocytogenes is a Gram-positive facultative intracellular bacterium that causes central nervous system infection. We report a case of rhombencephalitis caused by L. monocytogenes infection, which mimicked Bickerstaff's brainstem encephalitis, and GQ1b antibody positivity and multiple intracranial foci were observed. A 68-year-old male patient presented with a nonspecific prodrome of faintness, forehead tightness, and walking instability. This was followed by progressive cranial nerve palsies, limb weakness, cerebellar signs, hyperpyrexia, and impaired consciousness. Brain imaging showed multiple abnormal brainstem and cerebellar signals that were accompanied by blood infiltration without any lesion enhancement. Serum GQ1b antibody positivity led to an initial diagnosis of Bickerstaff's brainstem encephalitis, which was treated with immunosuppressive therapy with limited efficacy. A pathogen examination helped confirm L. monocytogenes infection. A combination of meropenem and trimethoprim-sulfamethoxazole therapy was applied and the patient recovered without sequelae. The symptoms and imaging of Listeria rhombencephalitis are nonspecific. Accurate diagnosis and prompt treatment of this condition are essential. Whether Listeria infection triggers an autoimmune response remains unclear.
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