Abstract
Neurofibromatosis is divided into 8 types. Acoording to the Baylor neurofibromatosis program Type I of this disease is called Von Recklinghausen's disease.
In 25 patients with type I neurofibromatosis who first visited our department during the period from January 1990 to September 1992, we carried out a balance test, electronystagmography (ENG), electroencephalography (EEG), and cranial magnetic resonance imaging (MRI).
None of the patients complained of disequilibrium nor did they have any past positive history of disequilibrium. The balance test was normal in all patients.
ENG revealed some, weak signs of nystagmus in all cases. EEG disclosed borderline or abnormal features in 56.3% of all cases.
Cranial MRI revealed no signs suggestive of acoustic nerve tumor. However, T1-and T2-weighted MR images from some cases containedhigh-intensity or low-intensity areas in the cerebellum and the brainstem.
Although no signs typical of this disease were found, the presence of some abnormalities in the cerebellum through the brainstem was suggested in patients with type I neurofibromatosis.
