[Nystagmographic findings in pontocerebellar angle tumors].
OBJECTIVE
To determine the diagnostic and prognostic value of vestibular function tests in cerebellopontine angle tumors


METHODS
Analysis of preoperative nystagmographic findings in 29 patients affected of cerebellopontine angle tumors and its possible correlation with anatomical and progressive patterns


RESULTS
Tumor size and growth pattern were statistically significantly related to auditory and vestibular functions and to central findings on nystagmography. Age, gender, tumor size and central findings on nystagmography did not show influence upon postoperative dysbalance. However, alterations related with adaptation of the vestibular system (positional nystagmus and asymmetry on rotational tests) correlated significantly with postsurgical dysbalance.


CONCLUSIONS
The tests for vestibular function reflect a the characteristics of growth of the cerebellopontine angle tumors and can help to identify the patients susceptible of prolonged postoperative dysbalance.
Servicio de ORL, Hospital Central de Asturias, Hospital Carmen y Severo Ochoa, Cangas del Narcea, Asturias. pperez@hcso.sespa.es
P
P
Pérez Vázquez
C
C
Muñoz Pinto
L
L
Baragaño Rio
J
J
Gómez Martínez
J L
JL
Llorente Pendás
C
C
Suárez Nieto
D000328:Adult; D000368:Aged; D002528:Cerebellar Neoplasms / Q000150:complications* / Q000503:physiopathology; D002530:Cerebellopontine Angle / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009759:Nystagmus, Pathologic / Q000209:etiology*; D014724:Vestibular Function Tests