Asma Abdullah

Relation of Distortion Product Otoacoustic Emission With Tinnitus

Objective: To investigate cochlear outer hair cell function based on distortion product otoacoustic emission (DPOAE) in patients with tinnitus.

Congenital bilateral facial nerve hypoplasia with sensorineural hearing loss: A case report

A 3-year-old child presented with congenital bilateral facial nerve palsy with bilateral profound sensorineural hearing loss. High Resolution Computed Tomogram (HRCT) of the temporal bones found bilateral atresia of cochlear nerve canals, incomplete partition of the cochleae and narrow facial nerve canals. Magnetic resonance imaging (MRI) revealed bilateral hypoplasia of facial nerves and aplasia of both vestibulocochlear nerves. There have been no other reported cases with this presentation. The possible aetiology and treatment options for the patient are discussed. We highlighted the review of aplasia/hypoplasia of the facial nerve and hypoplasia of cochlear nerve canal.

Prevalence of Hearing Loss among Preterm Very-Low-Birth-Weight Babies

Objectives: Determine the prevalence of hearing impairment and auditory neuropathy among preterm very-low-birth-weight (VLBW) babies at 1 year corrected age. Methods: Twenty babies were recruited. The subjects underwent transient evoked otoacoustic emission (TEOAE) and automated auditory brainstem response (AABR) at 34 to 36 weeks while they were still in the neonatal intensive care unit. The subjects were followed up with brainstem evoked response (BSER) at 3 months and 1 year of corrected age. A patient was considered to have hearing impairment if either 1 or both ears failed the test. The risk factors for hearing impairment are noted. Results: Thirty-five percent (14 out of 40 ears) failed TEOAE and 12.5% (5 out of 40 ears) failed AABR screen. Two babies defaulted BSER appointment. BSER at 3 months corrected age showed 5.5% (1 out of 18) with bilateral profound sensorineural hearing loss, 16.7% (3 out of 18) bilateral mild conductive hearing loss, and 77.8% (14 out of 18) with normal hearing. At 1 year of corrected age 5.5% (1 out of 18) had profound sensorineural hearing loss, 5.5% (1 out of 18) mild conductive hearing loss, and 89% (16 out of 18) had normal hearing. There was no prevalence of auditory neuropathy or progressive hearing loss in this study. Conclusions: Those VLBW babies achieved maturity of hearing at 3 months corrected age, therefore no repeat BSER is required at 1 year.

Rare Case of Temporal Bone Carcinoma with Intracranial Extension

Temporal bone cancer, a relatively rare disease, accounting for less than 0.2% of all tumors of the head and neck and is associated with a poor outcome; often presents in a subtle manner, which may delay diagnosis. It should be suspected in any case of persistent otitis media or otitis externa that fails to improve with adequate treatment. Despite advances in operative technique and postoperative care, long-term survival remains poor). It includes cancers arising from pinna that spreads to the temporal bone, primary tumors of the external auditory canal (EAC), middle ear, mastoid, petrous apex, and metastatic lesions to the temporal bone. Here is a report on a case of temporal bone carcinoma presenting with right otalgia, otorrhea and facial paralysis. The patient was initially diagnosed as mastoiditis and later the clinical impression was revised to temporal bone carcinoma (undifferentiated type), based on the pathologic findings.