聴神経腫瘍例に対するMRI使用経験

抄録

Acoustic neurinoma is a brain tumor which starts with symptoms of the 8th cranial nerve such as tinnitus, hearing loss and dizziness. It is a disease we otorhinolaryngologists encounter occasionally in our daily clinical practice. Making early diagnosis of this disease is important for the otorhinolaryngologists. History taking, nose-ear-throat examinations, hearing test, examination of equilibrium function, neurootological examination, plain X-ray, multiple tomography and CT scan are considered important as essential examinations in case acoustic neurinoma is suspected.
Where, however, positive findings are few, time is wasted while suspicion of the tumor cannot completely be dispeled in some cases.
Recently, we encountered a case in which the examinations mentioned above failed to reveal any postive findings. So, we employed the magnetic resonance imaging (MRI), of whic clinical application was recently made possible and were able to make diagnosis of this disease.
This paper is a report of our study of MRI in comparison with various other examinations.