Abstract
During the last two decades important advances have been made regarding the knowledge of immunomediated neuropathies, which entitled them to evolve from a theoretical existence to subtype differentiation. Nevertheless, questions regarding antigen topography or antibody's pathogenicity still need to be answer. Moreover, antibody typification is not necessarily available during clinical practice and usually diagnostic decisions or follow-up are done without it. The aim of this study is to raise awareness of the importance of divergent clinical findings in patients with immunomediated neuropathies. We present an acute and a chronic case of anti-ganglioside neuropathy immunologically studied with the best anti-ganglioside antibody panel available nowadays in our country along with an update of the current knowledge of these entities. Although there is no consensus regarding the pathogenicity of these antibodies, diverging clinical features (mainly ataxia and ophthalmoparesis) and disease prognosis (as markers of axonal damage) are known to be associated with different antibodies. Antibody characterization in anti-ganglioside neuropathies is an evolving field, which we believe should periodically updated and minded for patient's diagnosis and follow-up, even if laboratory confirmation is not immediate, if available at all.
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