OBJECTIVES/HYPOTHESIS To evaluate whether there is a genetic contribution to the development of narrow bony cochlear nerve canal and analyze the differences between unilateral and bilateral narrow bony cochlear nerve canal. STUDY DESIGN Retrospective review. METHODS Patients diagnosed with unilateral (n=44) or bilateral (n=13) sensorineural hearing loss with narrow bony cochlear nerve canal...

A solitary fibrous tumor (SFT) is an extremely rare, distinct otological soft-tissue tumor. Only two such tumors in the external auditory canal have been reported. A SFT related to hemangiopericytomas (HPC), which commonly arise in the central nervous system. HPCs act malignant in many cases, while SFTs at other sites are mainly benign. A 25-year-old female presented with highly vascular tumor ...

Dysfunction of the vestibular portion of the eighth nerve and the vestibular nuclei within the brainstem and their central connections is a central cause of dizziness and vertigo. Neural connections with the central vestibular nuclei include interaction with the vestibular portions of the cerebellum (primarily cerebellar flocculus), the visual sensory system, and afferent connections from muscl...

any portion of the membranous or the bony labyrinth. A primary or secondary deficiency of the cochlear nerve may also present as a congenital anomaly. CT and MRI allow for a detailed analysis of each lesion and they can provide guidance for the proper treatment of each patient. Both CT and MR imaging can be used to detect inner ear malformations, yet the two techniques are often complementary. ...

As many as 40% of patients with congenital sensorineural hearing loss will have a structural inner ear malformation identified on a temporal bone imaging study (1). Anomalies of the internal auditory canal (IAC) are rare and have been reported to account for only 12% of all congenital temporal bone abnormalities. Internal auditory canal abnormalities may be associated with hypoplasia or aplasia...

BACKGROUND AND PURPOSE While enhanced T1WI is considered the "gold standard" for detection of internal auditory canal pathology, unenhanced fluid-sensitive sequences have shown high sensitivity for lesion identification. Our purpose was to evaluate the diagnostic accuracy of an unenhanced MR imaging protocol using axial CISS and coronal T2WI for detection of small (10 mm or less) internal audit...