[The role of video-nystagmography in the diagnosis of acoustic neuroma].

AIM: Schwannoma of the vestibular nerve represents 75% of all expansive processes affecting the pontocerebellosum angle. Hearing loss is the most frequent symptom at diagnosis (86%) with or without tinnitus, in the intracanalicular tumors. Vestibular symptoms are described in 60% of patients.

MATERIAL AND METHOD: We study twenty cases of acoustic neuromas diagnosed between years 2000 and 2002 in both Otolaryngology and Neurosurgery Departments in our hospital. Videonystagmography (VNG) was performed in all of them. Videonystagmographic findings were analyzed statistically together with the tumoral size and hypoacusia level.

DISCUSSION AND

CONCLUSION

According to the medical literature reviewed for this paper, we conclude that caloric tests are the most frequently altered ones (77%), showing vestibular hyporreflexia or arreflexia.