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Chronic multiple paraneoplastic syndromes.

K A Kleopa1, J W Teener, S S Scherer

  • 1Department of Neurology, 3 West Gates, University of Pennsylvania Medical Center, 3400 Spruce Street, Philadelphia, Pennsylvania 19104-4283, USA. kleopa@mail.med.upenn.edu

Muscle & Nerve
|October 31, 2000
PubMed
Summary
This summary is machine-generated.

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A patient with anti-Hu positive encephalitis and Lambert-Eaton myasthenic syndrome (LEMS) associated with small-cell lung cancer achieved cancer remission. While anti-Hu symptoms improved, persistent LEMS requires ongoing treatment.

Area of Science:

  • Neurology
  • Oncology
  • Immunology

Background:

  • Paraneoplastic syndromes can manifest with diverse neurological symptoms.
  • Anti-Hu antibodies are strongly associated with small-cell lung cancer and neurological dysfunction.
  • Lambert-Eaton myasthenic syndrome (LEMS) is a rare autoimmune disorder affecting neuromuscular transmission.

Observation:

  • A patient presented with limbic and brainstem encephalitis, neuronopathy, and cerebellar dysfunction, alongside highly positive anti-Hu antibodies.
  • The patient also tested positive for P/Q-type calcium channel antibodies and exhibited symptoms of LEMS.
  • A diagnosis of small-cell lung cancer was established concurrently with the neurological presentation.

Findings:

  • Treatment with antineoplastic therapy and intravenous immunoglobulin (IVIg) led to remission of the small-cell lung cancer.

Related Experiment Videos

  • Anti-Hu antibody-related neurological manifestations showed improvement following treatment.
  • LEMS persisted despite cancer remission and immunotherapy, resulting in a dependency on IVIg for management.

    • Implications:

    • This case highlights the complex interplay between paraneoplastic neurological disorders and underlying malignancies.
    • The differential response of anti-Hu encephalitis and LEMS to treatment underscores the distinct pathogenic mechanisms.
    • Long-term management strategies are crucial for patients with persistent autoimmune neurological conditions like LEMS, even after successful cancer treatment.