Paraneoplastic syndrome mimicking progressive supranuclear palsy

Area of Science:

• Neurology
• Oncology
• Immunology

Background:

• Paraneoplastic syndromes are rare complications of cancer, often presenting with neurological symptoms.
• Progressive Supranuclear Palsy (PSP) is a neurodegenerative disorder characterized by parkinsonism and other neurological deficits.
• The co-occurrence of PSP phenotype with malignancy is exceptionally uncommon.

Observation:

• A patient presented with rapidly progressive parkinsonism, clinically resembling PSP.
• Diagnostic workup revealed small cell carcinoma of the lung.
• The patient was seropositive for onconeural antibodies, suggesting an autoimmune response targeting neural tissue.

Findings:

• The patient's presentation was consistent with a paraneoplastic neurological disorder.
• Treatment involved a combination of immunomodulatory therapy and chemotherapy for the lung cancer.
• A significant improvement in the patient's neurological symptoms was observed post-treatment.

Implications:

• This case underscores the importance of considering paraneoplastic syndromes in patients with atypical parkinsonism.
• Early diagnosis and combined oncological and immunological treatment can lead to favorable outcomes.
• Further research into onconeural antigens and their role in paraneoplastic PSP-like syndromes is warranted.