ARRS 2022 Abstracts


E1686. Imaging of Hearing Loss: Common and Uncommon Disorders of the External, Middle, and Inner Ear
  1. Justin Cole; UT Health San Antonio
  2. Bundhit Tantiwongkosi; UT Health San Antonio
  3. Jason Lally; UT Health San Antonio
  4. Prabhakar Kesava; UT Health San Antonio
The purpose of this educational exhibit is to discuss both common and uncommon etiologies for conductive and sensorineural hearing loss. The target audience for this exhibit will include radiology residents, general radiologists, subspecialty neuroradiologists, otolaryngology residents, and practicing otolaryngologists.

Educational Goals / Teaching Points
The teaching points will include the anatomy of the temporal bone including divisions of the external, middle, and inner ear; the role of imaging for both benign and malignant pathologies that can result in conductive and sensorineural hearing loss; and identification of the more common congenital etiologies of hearing loss.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
To start, the exhibit will provide a description of temporal bone anatomy with drawings to showcase external, middle, and inner ear anatomy. Subsequently, we will review cases resulting in hearing loss, starting from the outer ear, moving to the middle ear, and ending with the inner ear. For each case, we will summarize the epidemiology, clinical presentation, common imaging findings, associated imaging findings, pathophysiology, and complications related to the condition. External ear cases will include cerumen impaction, keratosis obturans, external auditory canal (EAC) foreign body, EAC exostosis, EAC osteoma, EAC atresia, and EAC squamous cell carcinoma. Middle ear cases will include cholesteatoma, tympanosclerosis, glomus tympanicum and jugulotympanicum tumors, facial nerve schwannoma, Nager syndrome, Oculo-Auriculo-Vertebral spectrum, and incus fixation by osseous bar. Inner ear cases will include fenestral and retrofenestral otosclerosis, internal auditory canal stenosis, vestibular neuritis, superior semicircular canal dehiscence, endolymphatic sac tumor, large vestibular aqueduct syndrome, X-linked stapes gusher, and cochlear incomplete partition types I and II.

I will end with a conclusion focusing on a “take home message”. This conclusion will review the anatomy of the temporal bone in addition to highlighting a few of the more common causes of hearing loss based on external, middle, and inner ear classification.