Case Report
Year: 2020 | Month: April | Volume: 7 | Issue: 4 | Pages: 423-426
The Advantages of Having Tone Burst Auditory Brainstem Response in Finding Hearing in Patients with Cerebellopontine Angle Tumor- A Case Study
Pachaiappan1, Elakiyaelango2, Maryam Thabassum2, Subashini Suresh2
1Assistant Professor, 2BASLP (2016-2020),
Department of Audiology, MERF-Institute of Speech and Hearing P (LTD), Chennai-600 028, Tamilnadu,
Corresponding Author: Pachaiappan
ABSTRACT
Acoustic neuroma is a rare non cancerous tumor. It grows slowly from on over production of Schwann cells and also called a vestibular schwannoma. The tumor then presses on the hearing and balance nerves in the inner ear. Schwann cells normally wrap around and support nerve fibers. A large tumor can press on the facial nerve or brain structures. The early signs of Acoustic Neuroma are Unilateral or Asymmetric hearing loss and/or tinnitus, loss of balance from which Auditory symptoms are usually the first indication of a developing Acoustic neuroma. Unfortunately early detection of tumor is sometimes difficult because of the symptoms may be subtle and may not appear in beginning stage of the growth. Once these symptoms appear, the following examination (PTA, Immittance, OAE, ABR, HAT) are essential for proper diagnosis.
CT (Computerized tomography) and MRI (Magnetic resonance imaging) scans help to determine the location and size of the tumour. Early diagnosis offers the best opportunity for successful treatment.
Keywords: Acoustic neuroma, Hearing loss, tone burst ABR.
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