Routine thin-sect ion CT after contrast enhancement may fail to demonstrate smal l acoustic neuromas, usually those smaller than 10 mm [1, 2]. Metrizamide CT cisternography has demonstrated such small acoustic neuromas, but cannot demonstrate an intracanalicular tumor accurately [3]. Pantopaque c isternography can demonstrate an intracanalicular mass, but has a high percentage of inconclusive e...

Manifestations of central von Recklinghausen 's neurofibromatosis are well known and may include bilateral acoustic neuromas in the absence of peripheral neurofibromatosis or associated gliomas, meningiomas, other cranial nerve neuromas, optic nerve gliomas, and ependymomas [1]. A few reports deal specifically with the cranial CT findings in central neurofibromatosis [2-4]. One series [3] inclu...

In 95 percent of the cases, patients with acoustic neuromas will have some magnitude of hearing loss in the affected ear. This paper reports on four patients who had acoustic neuromas and normal hearing. Results from the case history, audiometric evaluation, auditory brainstem response (ABR), electroneurography (ENOG), and vestibular evaluation are reported for each patient. For all patients, t...

Although unilateral acoustic neuromas in children are rare, they do occur. There is no gender predilection and the clinical symptoms and signs are similar to those seen in adults. They tend to occur in the absence of neurofibromatosis and are usually benign. Our patient is the youngest yet reported with documented unilateral acoustic neuroma; moreover; she is the first child in whom this tumor ...