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Limbic encephalitis: Clinical spectrum and long-term outcome from a developing country perspective
Sujit Abajirao Jagtap1, Gopal Krishna Das1, Harsha J Kambale2
1Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India.
Annals of Indian Academy of Neurology
|July 16, 2014
Summary
Limbic encephalitis (LE) is a neurological disorder presenting with memory loss and seizures. Early diagnosis and immunotherapy are crucial for improving patient outcomes in developing nations.
Area of Science:
- Neurology
- Immunology
Background:
- Limbic encephalitis (LE) is a severe neurological condition characterized by rapid memory loss, psychiatric disturbances, and seizures.
- Understanding the clinical spectrum and etiology of LE is vital, particularly in diverse geographical regions like India.
Purpose of the Study:
- To describe the clinical presentation, underlying causes, and long-term outcomes of limbic encephalitis patients in India.
- To highlight the importance of early diagnosis and treatment in improving patient prognosis.
Main Methods:
- A prospective study conducted from January 2009 to December 2011 included 16 patients with clinical suspicion of LE.
- Diagnostic criteria included MRI evidence of temporal lobe involvement, CSF abnormalities, or positive antineuronal antibodies, with exclusions for metastasis, infection, and metabolic causes.
- Patients were assessed for symptoms, underwent MRI and antibody testing, and were followed for a mean of 21 months.
Main Results:
- The most common symptoms were short-term memory impairment (7 patients), seizures (5), and behavioral changes (3).
- Four patients (25%) had associated malignancy. MRI revealed characteristic temporal lobe hyperintensities in 50% of cases.
- At follow-up, 10 patients (62.5%) showed improvement, 4 (25%) remained stable, and 2 (12.5%) expired.
Conclusions:
- Early recognition of limbic encephalitis is critical, especially in developing countries where antibody screening may be limited.
- Clinical and MRI findings are essential for prompt diagnosis.
- Timely initiation of immunotherapy significantly improves long-term outcomes for patients with LE.
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