Cryptococcal infection of the nervous system

Area of Science:

• Neurology
• Infectious Diseases
• Medical Mycology

Background:

• Cryptococcal infections of the central nervous system (CNS) pose a significant threat, particularly to individuals with compromised immune systems.
• A 10-year review identified 18 cases, with a majority (61%) of patients being immunocompromised, often due to steroid or cyclophosphamide use.

Purpose of the Study:

• To review clinical features, diagnostic methods, treatment outcomes, and prognostic factors of CNS cryptococcosis.
• To highlight the importance of early diagnosis and appropriate management in improving patient survival and recovery.

Main Methods:

• Retrospective review of 18 patients diagnosed with CNS cryptococcosis over a 10-year period.
• Analysis of patient demographics, clinical presentations, diagnostic findings (CSF analysis, CT scans), treatment regimens, and outcomes.

Main Results:

• Fever, headache, and neck rigidity were common presenting symptoms, mimicking meningitis. Seizures and mental confusion were less frequent.
• Diagnosis relied on cerebrospinal fluid (CSF) analysis, including Indian-ink preparation, culture, and antigen testing. CT scans aided diagnosis and monitoring.
• Amphotericin B and 5-fluorocytosine were primary treatments. Mortality was 39%, with poorer prognosis linked to immunocompromised status, seizures, and cerebral edema on CT.

Conclusions:

• CNS cryptococcosis requires a high index of suspicion for timely diagnosis, especially in immunocompromised individuals.
• While mortality is substantial, full recovery is achievable for survivors. Prognostic indicators like seizures and cerebral edema necessitate aggressive management.
• Combination antifungal therapy is crucial, with potential adjunctive roles for imidazole derivatives and garlic.