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Foramen magnum neurenteric cyst causing mollaret meningitis: MR findings
M A Weiss1, S S Gebarski, P E McKeever
1Department of Radiology, University of Michigan Medical School, Ann Arbor, USA.
AJNR. American Journal of Neuroradiology
|February 1, 1996
Abstract:
MR showed a neurenteric cyst posterior to the cervicomedullary junction in a man with chronic recurrent aseptic meningitis. On T1-weighted MR, the cyst was of high intensity in relation to the brain, and on T2-weighted MR it was of less intensity than cerebrospinal fluid.
Insights
A neurenteric cyst posterior to the cervicomedullary junction was identified in a patient with recurrent aseptic meningitis. Magnetic resonance (MR) imaging revealed characteristic signal intensities on T1- and T2-weighted sequences.
Area of Science:
- Neurology
- Radiology
- Neurosurgery
Background:
- Aseptic meningitis can present with diverse etiologies, posing diagnostic challenges.
- Neurenteric cysts are rare congenital malformations, typically found along the spinal cord or craniocervical junction.
- Chronic recurrent aseptic meningitis necessitates thorough investigation for underlying structural abnormalities.
Observation:
- Magnetic resonance (MR) imaging was utilized to evaluate a patient experiencing chronic recurrent aseptic meningitis.
- The imaging revealed a cystic lesion situated posterior to the cervicomedullary junction.
- This anatomical location is critical for neurological function and potential cyst-related symptoms.
Findings:
- The neurenteric cyst demonstrated specific signal characteristics on MR imaging.
- On T1-weighted sequences, the cyst appeared hyperintense relative to brain parenchyma.
- On T2-weighted sequences, the cyst exhibited hypointensity compared to cerebrospinal fluid (CSF).
Implications:
- The findings suggest that neurenteric cysts should be considered in the differential diagnosis of recurrent aseptic meningitis.
- Characteristic MR imaging findings can aid in the diagnosis of these rare lesions.
- Accurate diagnosis is crucial for appropriate management and to prevent potential neurological complications.