Objective The aim of this study is to describe the endoscopic anatomy of the subtympanic sinus (STS), establish a classification according to its extension regarding the level of the facial nerve (FN), and assess the feasibility of the transcanal endoscopic approach to the STS. Study Design Experimental anatomic research. Setting Temporal bone laboratory. Methods We performed endoscopic dissection of 34 human whole head and ear block specimens. Of those, 29 underwent high-resolution computed tomography. The STS was classified according to its extension regarding the level of the FN: type A, no extension medial to the FN; type B, extension to the medial limit of the FN; type C, extension of the sinus medially and posteriorly from the FN into the mastoid cavity. Results The majority of cases (n = 21, 72%) showed a shallow type A STS. We observed a deep type B configuration in 6 cases (21%) and a type C in 2 cases (7%). The STS was completely exposable with a 0° endoscope in 44% of the specimens. Using a 45° endoscope, we gained complete insight in 79%. However, in 21% of the cases, the posteromedial extension of the STS was too deep to be completely explored by an endoscopic transcanal approach. Conclusion The majority of the STS is shallow and does not extend medially from the FN. This morphologic variant allows complete transcanal endoscopic visualization. In more excavated STS, a complete endoscopic exploration is not achievable, and a retrofacial approach may be adopted to completely access the STS.
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http://dx.doi.org/10.1177/0194599818787180 | DOI Listing |
J Vasc Surg Cases Innov Tech
April 2025
Atrium Health, Sanger Heart and Vascular Institute, Division of Vascular Surgery, Charlotte, NC.
We report a case of mesenteric ischemia after thoracic endovascular aortic repair (TEVAR) for chronic type B aortic dissection performed at a different institution. Computed tomography angiography findings indicated that the previous TEVAR had been deployed distally into the false lumen. To mitigate this, a large fenestration was created between the false lumen and true lumen.
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December 2024
Department of Rheumatology, Fuzhou University Affiliated Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China.
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View Article and Find Full Text PDFHandchir Mikrochir Plast Chir
January 2025
Hand Surgery, Baltalimani Special Hospital for Bone Diseases, Istanbul, Turkey.
Purpose: This study aims to compare the clinical and radiological outcomes of three different techniques used in the surgical treatment of ulnar styloid fractures.
Material And Method: Ulnar styloid fractures treated surgically between 2012 and 2022 were evaluated retrospectively. There were three groups in the study: Group I (Kirschner wire, N= 19), Group II (tension band, N= 27) and Group III (headless compression screw, N= 25).
Genet Epidemiol
January 2025
MRC Integrative Epidemiology Unit, University of Bristol, Bristol, UK.
Genome-wide association studies (GWAS) are hypothesis-free studies that estimate the association between polymorphisms across the genome with a trait of interest. To increase power and to estimate the direct effects of these single-nucleotide polymorphisms (SNPs) on a trait GWAS are often conditioned on a covariate (such as body mass index or smoking status). This adjustment can introduce bias in the estimated effect of the SNP on the trait.
View Article and Find Full Text PDFVet Microbiol
January 2025
Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China. Electronic address:
The purpose of this study was to investigate whether RIPK3-mediated programmed cell death can promote the replication and transmission of renal infectious bronchitis virus in renal tubular epithelial cells. Primary renal tubular epithelial cells were extracted from 1 to 7 day old Hy-Line Brown chicks, cultured in vitro by type I collagenase digestion, and infected with 1MOI SX9 strain. Cell samples were collected at 12 hpi, 24 hpi, 36 hpi and 48 hpi for experimental exploration.
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