[Asymptomatic acoustic neurinoma associated with hypophyseal macroadenoma].
The widespread use of gadolinium-enhanced MRI (Gd-MRI) in our hospitals has supposed an increase in detection of asymptomatic acoustic neuromas (AN) as incidental finding. Concurrent primary intracranial tumors of different cell types are extremely uncommon.


METHODS
A 23 year-old woman complained of irregular menstrual cycles and galactorrhea for two years. A Gd-MRI scan showed a pituitary macroadenoma and an AN of 1.4 cm. with intracanalicular and cisternal extension. The patient did not have any otologic or neuro-otologic symptoms or signs. Audiograms revealed bilateral normal hearing. The results of acoustic reflex test and electronystagmographic caloric tests were normal. The AN underwent radiosurgery treatment.


CONCLUSIONS
The literature about atypical AN is reviewed, giving a particular concern on asymptomatic cases. We only have found one case of association between AN and pituitary adenoma. The real prevalence of AN in general population is discussed.
Vaamonde Lago
P
P
Cátedra y Servicio de O.R.L., Hospital Clínico Universitario de Santiago de Compostela.
Castro Vilas
C
C
Soto Varela
A
A
Frade González
C
C
Santos Pérez
S
S
Labella Caballero
T
T
D000236:Adenoma / Q000175:diagnosis*; D000328:Adult; D005260:Female; D006801:Humans; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis*; D009464:Neuroma, Acoustic / Q000175:diagnosis*; D010911:Pituitary Neoplasms / Q000175:diagnosis*
Neurinoma del acústico asintomático asociado con macroadenoma de hipófisis.