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Computed tomography and magnetic resonance imaging of tuberculous meningitis
1Department of Radiology, Tripler Army Medical Center, Honolulu, Hawaii 96859-5000.
Abstract:
Tuberculous meningitis usually results from hematogenous seeding of the central nervous system from a primary pulmonary source of infection. Initially, the meningitic process can mimic a flu-like syndrome, followed rapidly by the development of profound neurologic deficits. Computed tomography scanning or magnetic resonance imaging of the head often demonstrates a characteristic pattern of basal cistern involvement with Mycobacterium tuberculosis. The incidence of tuberculous meningitis in the more developed countries has increased during the past 5 years because of the growing number of cases in patients with acquired immunodeficiency syndrome, the spread among the homeless, and the expanding immigrant population. The significant morbidity and mortality rates associated with tuberculous meningitis--generally considered to be a disease of the past--emphasize the need for greater clinical awareness, early diagnosis, and prompt treatment.
Insights
Tuberculous meningitis, a serious central nervous system infection, is increasing due to factors like acquired immunodeficiency syndrome. Early diagnosis and treatment are crucial for better outcomes in this often-fatal disease.
Area of Science:
- Neurology
- Infectious Diseases
- Public Health
Background:
- Tuberculous meningitis (TBM) originates from a primary pulmonary infection spreading to the central nervous system (CNS).
- The disease's incidence is rising in developed nations, driven by HIV/AIDS, homelessness, and immigration.
Observation:
- Initial symptoms of TBM can resemble a flu-like illness.
- Rapid progression to severe neurological deficits is common.
- Characteristic findings on head CT or MRI include basal cistern involvement by Mycobacterium tuberculosis.
Findings:
- TBM presents a significant challenge due to high morbidity and mortality rates.
- Despite being historically viewed as a past disease, TBM requires renewed clinical attention.
Implications:
- Increased clinical awareness is essential for prompt diagnosis of TBM.
- Early detection and timely treatment are critical to improve patient outcomes.
- Addressing the rising incidence of TBM necessitates public health strategies targeting at-risk populations.