Analysis of temporal bone thickness outside of the petrous temporal bone between superior semicircular canal dehiscence and normal patients

Tyler Miao; Michael Johanis; Taranjit Kaur; Courtney Duong; Russell De Jong; Shelby Willis; Michelle Hong; Prasanth Romiyo; Leslie Hwang; David McArthur; Isaac Yang; Quinton Gopen

doi:10.1016/j.jocn.2020.12.011

Analysis of temporal bone thickness outside of the petrous temporal bone between superior semicircular canal dehiscence and normal patients

J Clin Neurosci. 2021 Feb:84:23-28. doi: 10.1016/j.jocn.2020.12.011. Epub 2020 Dec 28.

Authors

Affiliations

¹ Department of Head and Neck Surgery, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States.
² Department of Head and Neck Surgery, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States. Electronic address: mjohanis@ucla.edu.
³ Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States.
⁴ Department of Head and Neck Surgery, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States; Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States.
⁵ Department of Neurosurgery, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States; UCLA Jonsson Comprehensive Cancer Center, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States; Department of Radiology, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States; Office of the Patient Experience, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States; Department of Surgery, Harbor-UCLA Medical Center, Torrance, CA, United States.
⁶ Department of Head and Neck Surgery, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States; UCLA Jonsson Comprehensive Cancer Center, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States; Office of the Patient Experience, Ronald Reagan UCLA Medical Center, Los Angeles, CA, United States; Department of Surgery, Harbor-UCLA Medical Center, Torrance, CA, United States.

PMID: 33485593
DOI: 10.1016/j.jocn.2020.12.011

Abstract

Background: SSCD is a rare inner ear disorder. This study aims to compare the thickness of the temporal bone beyond the petrous portion between healthy subjects and those with SSCD to determine whether the etiopathology of SSCD is localized to the petrous temporal bone or generalized to other parts of the temporal bone.

Methods: A retrospective chart review of electronic medical records from September 2011 to February 2018 was conducted at a single-institution study at the University of California, Los Angeles. Participants were divided into two groups: Group 1 had a confirmed diagnosis of SSCD, while Group 2 had no known ear or temporal bone pathology. Participants' high-resolution coronal and axial temporal bone computed tomography scans were analyzed. Regions within the temporal bone were measured and compared between the two groups.

Results: A total of 262 scans were included. Group 1 consisted of 103 scans, while Group 2 consisted of 159 scans. There was no statistically significant difference in the thickness of temporal bones between patients diagnosed with SSCD and patients without otologic disease.

Conclusion: The results suggest that the etiology of SSCD is limited to the petrous portion of the temporal bone. SSCD may be unrelated to a larger process of global temporal bone degeneration. Additional clinical screening for regions outside the petrous temporal bone is not warranted unless SSCD patients present with symptoms characteristic of other temporal bone pathologies.

Keywords: Petrous temporal bone; Superior semicircular canal dehiscence; Temporal bone.

MeSH terms

Adolescent
Adult
Aged
Aged, 80 and over
Child
Female
Humans
Male
Middle Aged
Retrospective Studies
Semicircular Canal Dehiscence / pathology*
Temporal Bone / pathology*
Tomography, X-Ray Computed
Young Adult