April - June 2020
CD8 + T-lymphocyte Encephalitis: A Systematic Review
Abstract
The increase of CD8 + T lymphocytes in the perivascular spaces of patients with HIV encephalopathy has been reported in some studies. CD8 + T lymphocyte encephalitis was first described in 2013 and then a few other similar cases were published. We proposed to analyze the clinical, MR imaging, and histopathology findings of CD8 + T lymphocyte encephalitis. A systematic review was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-analyzes protocol using the PubMed, Scopus, Lilacs, and IBECS databases up to February 3, 2018. Seven articles were included, two case series and five case reports. A total of 19 individuals were evaluated. MRI showed alterations in the white matter signal in all cases. Histopathology showed a predominance of CD8 + T lymphocytes. The findings described so far may resemble the inflammatory immune reconstitution syndrome. New studies on the subject are needed in an attempt to characterize the differences between these two entities.
Keywords:
HIV. CD8 + T lymphocytes. Encephalitis. Magnetic resonance imaging.
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