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We describe a patient with extra-limbic seronegative encephalitis with relapsing progressive course as the harbinger of sequential Hodgkin's lymphoma and Diffuse Large B-Cell lymphoma. Diagnosis of probable paraneoplastic neurologic syndrome (PNS) was arrived at by exhaustive elimination of alternative causes and supportive tissue diagnosis. This case highlights the phenotypic variety of paraneoplastic neurologic syndromes associated with hematologic malignancies and the challenges in their recognition, diagnosis, and treatment. We discuss and apply the updated consensus diagnostic criteria for paraneoplastic syndromes to our case as a means of bolstering probability in cases of diagnostic uncertainty.
Li et al. (Sun,) studied this question.