Dehiscence or thinning of bone overlying the superior semicircular canal in idiopathic intracranial hypertension

Autor: Güler Berkiten, Yavuz Atar, Defne Gürbüz, Hüseyin Sari, Onur Akan, Yavuz Uyar, Ertan Berkiten, Melis Koşar Tunç, Belgin Tutar, Semih Karaketir, Hasan Sami Bircan
Rok vydání: 2021
Předmět:
Zdroj: European Archives of Oto-Rhino-Laryngology. 279:2899-2904
ISSN: 1434-4726
0937-4477
Popis: Retrospective cohort. The objective of the study is to evaluate a relationship between idiopathic intracranial hypertension (IIH) and superior semicircular canal dehiscence (SSCD) of bone overlying the superior semicircular canal (SSC). A total of 57 (114 ears) individuals, 20 of whom were controls and 37 of whom were IIH, were included in the study. Individuals were evaluated with 0.8 mm slice thickness computed tomography (CT) images for SSC bony roof thickness and SSCD. Thickness of the bony roof over the SSC was graded from Grade 1 to Grade 4. Grade 3 was defined as pre-dehiscence and Grade 4 as dehiscence. Bony roof thickness was 1.25 mm in the control group and 0.76 mm in the IIH group. When bony roof thickness was compared between the groups, it was found to be significantly thinner in the IIH group (p = 0.012). In the IIH group, while dehiscence was detected in 25 of 74 ears, no dehiscence was detected in 49 ears. In the control group, while dehiscence was detected in 5 ears, no dehiscence was detected in 35 ears. The difference is statistically significant (p = 0.015). The correlation between bony roof thickness and cerebrospinal fluid (CSF) pressure in the IIH group was not statistically significant (p = 0.343; rho = 0.110). The correlation between bony roof thickness and age in the IIH group was not statistically significant (p = 0.082; rho = − 0.164). Increased CSF pressure in patients with IIH may cause chronic, progressive, and irreversible damage to the bone of the SSC and, according to our study, the rate of SSCD was found to be high in IIH patients.
Databáze: OpenAIRE
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