Non-classical paraneoplastic neurological syndrome (PNS) may be identified and classified as “definite” and “probable” according to the antineuronal antibodies status and the presence or absence of an associated cancer [1]. Paraneoplastic motor neuron disease (PMND) is a rare, potentially treatable, non-classical PNS that may be undistinguishable from sporadic motor neuron disease (MND) [2].

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