CT evaluation of the vidian canal localization

Yazar, Fatih Mehmet; Çankal, Fatih; Haholu, Aptullah; Kılıç, Cenk; Tekdemi̇r, İbrahi̇m

doi:10.1002/ca.20496

Cited by 38 publications

(35 citation statements)

References 11 publications

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“…In contemporary practice, CT has been accepted as the standard in presurgical evaluation of candidates for endoscopic sinus surgery. The published literature also shows that a CT scan is indispensable in evaluating changes deeper within the PPF and the VC and in detailing the anatomy [5,11]. Bagatella performed microsurgical dissections in 30 sinonasal blocks of adult cadavers and reported that vidian nerve surgery is difficult even in cadavers because the location of the VC orifice varied greatly, not only from one person to another but also from one side to the other in the same person [1].…”

Section: Discussionmentioning

confidence: 96%

Endoscopic transsphenoidal vidian neurectomy

Lee

Kao

Hsu

et al. 2011

Eur Arch Otorhinolaryngol

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The purpose of this report is to describe a novel technique for endoscopic vidian neurectomy (EVN) based on preoperative computed tomography (CT) classification of the vidian canal (VC), and to present anatomical and surgical findings from an initial series. Retrospective study, consisting of medical chart review and patient interviews, of all preoperative CT-guided EVN procedures was performed from 2006 to 2010 at a tertiary-care medical center. A total of 89 patients with intractable rhinorrhea (77 males and 12 females, mean age 29 years, age range 16-57 years) underwent bilateral EVN. Configuration of the VC was classified into three types based on preoperative CT findings. The technique for surgical access of each of these configurations is presented. The most common configuration of the VC was type 2 (47%). A wide, direct, and safe exposure of the vidian nerve was achieved in all cases. 84 of 89 patients completed the questionnaires regarding the postoperative improvement in quality of life. Follow-up ranged from 2 to 42 months, with an average of 19.6 months. 77 of 84 (91.7%) patients were satisfied with their surgical result. Two patients underwent revision ETSVN due to relapsed symptoms. With the help of a preoperative CT scan of the paranasal sinuses, the vidian nerve can be identified precisely via an endoscopic intrasphenoidal or transsphenoidal approach, which provides an easy and reliable way to perform vidian neurectomy.

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Section: Discussionmentioning

confidence: 96%

Endoscopic transsphenoidal vidian neurectomy

Lee

Kao

Hsu

et al. 2011

Eur Arch Otorhinolaryngol

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“…For this reason, we have described a second trajectory, in which the dissection is made lateral to the ET and medial to the pterygoid and tensor veli palatini muscles. This trajectory generates sufficient space to treat lesions, especially prestyloid ones, 16,20 while preserving the stylopharyngeal aponeurosis 8 to avoid vascular damage to the parapharyngeal segment of the ICA and the internal jugular vein. Thanks to these 2 courses, we can transpose the ET and reach Kassam Zones 6 and 7 while viewing with a 0° lens, which is more intuitive and practical during surgery.…”

Section: Discussionmentioning

confidence: 99%

Full endoscopic endonasal extreme far-medial approach: eustachian tube transposition

Simal-Julián¹,

Miranda-Lloret²,

Beltrán-Giner³

et al. 2013

PED

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The complex anatomical relationships within the skull base have been described from an endoscopic point of view. However, systematic surgical, not just anatomical, management of the eustachian tube (ET) and the approach to the styloid and parapharyngeal spaces have not yet been described. The authors describe the full endoscopic endonasal extreme far-medial approach used in their surgical practice and show how they applied it to a case. To the authors' knowledge, from a strictly surgical viewpoint, this work is the first to describe a fundamental endonasal approach to the inferior clivus, the condylar and tubercular compartments, the prestyloid and poststyloid spaces, and ET transposition to expose the aforementioned structures without disrupting the ET. For lesions with mediolateral growth patterns, the authors consider the extreme far-medial approach to be superior to the pure transmaxillary approach. Additional cases and more evidence are needed to refine this surgical technique.

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“…In the study in which they evaluated 300 CT examinations, Hewaidi et al (24) reported dehiscence rate in the Vidian canal bony roof to be 37%. Yazar et al (5) reported that the dehiscence frequency was 32% in the Vidian canal bony roof and it was less in patients with Vidian canal protruding into the sphenoid sinus. In this study, the presence of dehiscence in the Vidian canal bony roof was 22.2% on the right side and 26.6% on the left side.…”

Section: Discussionmentioning

confidence: 99%

“…Knowing the anatomical variations is important not only for reduction in the complications of endoscopic sinus surgery but also for surgical correction and elimination of the variations that are thought to cause pathology in the paranasal sinuses (5,6). The best way to avoid complications of sinus surgery is to have full knowledge of the paranasal sinus anatomy.…”

Section: Introductionmentioning

confidence: 99%

Vidian Canal Types and Dehiscence of the Bony Roof of the Canal: An Anatomical Study

Yeğin¹,

Çelik²,

Altıntaş³

et al. 2017

Turk Arch Otorhinolaryngol

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Objective: To determine the prevalence of Vidian canal types and dehiscence of the bony roof of the canal. Methods:This study included 594 patients (391 males and 203 females; average age, 32.43±11.98 years; range, 18-65 years). Computed tomography (CT) images were analyzed in terms of the prevalence of Vidian canal types and dehiscence of the bony roof of the canal.Results: Vidian canal types 1, 2, and 3 based on the sphenoid sinus body were found on the right side in 33.8%, 29.7%, and 6.5%, and on the left side in 36.4%, 27.4%, and 36.2% of the patients, respectively. Dehiscence of the bony roof of the canal was found on the right side in 22.2% of the patients and on the left side in 26.6%. In terms of Vidian canal types based on the sphenoid sinus floor, types 1, 2, 3, and 4 were found on the right side in 53.5%, 27.4%, 7.6%, and 11.5%, and on the left side in 54.9%, 26.6%, 6.6%, and 11.9% of the patients, respectively. On the right side, Vidian canal type 2 was significantly (p=0.002) more frequent in males than in females. Conclusion:When studying the complex anatomy of the sphenoid sinus, it is essential to consider Vidian canal types. Before endoscopic sinus surgery the Vidian canal and other anatomical structures should be carefully evaluated in all patients during preoperative paranasal sinus CT imaging to avoid complications.

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CT evaluation of the vidian canal localization

Cited by 38 publications

References 11 publications

Endoscopic transsphenoidal vidian neurectomy

Endoscopic transsphenoidal vidian neurectomy

Full endoscopic endonasal extreme far-medial approach: eustachian tube transposition

Vidian Canal Types and Dehiscence of the Bony Roof of the Canal: An Anatomical Study

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