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Imaging in neurofibromatosis type 2: screening using magnetic resonance imaging
1Neuroradiology Department, Manchester Royal Infirmary, England.
Ear, Nose, & Throat Journal
|March 25, 1999
Summary
Neurofibromatosis type 2 (NF2) involves tumors on cranial and spinal nerves. Whole neural axis screening is crucial for detecting asymptomatic lesions, with MRI being the preferred diagnostic method.
Area of Science:
- Neurology
- Oncology
- Radiology
Background:
- Neurofibromatosis type 2 (NF2) is a genetic disorder.
- It is characterized by the development of tumors, primarily schwannomas and meningiomas.
- These tumors can affect the cranial nerves, spinal cord, and brain.
Purpose of the Study:
- To highlight the mandatory nature of comprehensive neural axis screening in NF2.
- To emphasize the diagnostic utility of MRI in identifying NF2-related lesions.
- To underscore the importance of early detection for patient management.
Main Methods:
- Review of diagnostic protocols for Neurofibromatosis type 2.
- Emphasis on Magnetic Resonance Imaging (MRI) as the primary imaging modality.
- Utilization of contrast-enhanced, T1-weighted sequences in multiple imaging planes.
Main Results:
- NF2 presents with bilateral eighth-nerve schwannomas.
- Other common findings include intracranial and spinal meningiomas and gliomas.
- Asymptomatic lesions are frequently observed, necessitating thorough screening.
Conclusions:
- Complete screening of the entire neural axis is essential for all NF2 patients.
- MRI, particularly with contrast enhancement, is the imaging technique of choice.
- Early identification of all tumor locations is critical for effective treatment planning and prognosis.