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ORIGINAL ARTICLES
Published online: 2020-08-07
Submitted: 2020-05-31
Accepted: 2020-07-20
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Protrusion of the carotid canal into the sphenoid sinuses: evaluation before endonasal endoscopic sinus surgery

J. Jaworek-Troć, J. A. Walocha, R. Chrzan, P. Żmuda, J. J. Zarzecki, A. Pękala, P. Depukat, E. Kucharska, M. Lipski, A. Curlej-Wądrzyk, M. P. Zarzecki
DOI: 10.5603/FM.a2020.0086
·
Pubmed: 32789847

open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2020-08-07
Submitted: 2020-05-31
Accepted: 2020-07-20

Abstract

Background: Many reports have previously indicated the vast number of anatomical variations of the sphenoid sinuses, e.g. presence of the recesses. Notwithstanding, there are a few crucial neurovascular structures directly neighbouring with the sinuses. The following research aimed to evaluate frequency prevalence of the carotid canal’s protrusion into the sphenoid sinuses in adult population. Materials and methods: Computed tomography (CT) scans of the paranasal sinuses of 296 patients (147 females, 149 males) were analysed in this retrospective study. The patients did not present any pathologies in the sinuses. Spiral CT scanner­ ­Siemens Somatom Sensation 16 was used in the standard procedure in the option Siemens CARE Dose 4D. Results: Protrusion of the carotid canal was found in the majority of the patients – 55.74%, more frequently in males (65.1% of the patients) than in females (46.26% of the patients). The said variant – regardless of gender – was noted more often bilaterally (41.55% of the cases: 29.93% females, 53.02% males) than unilaterally (14.19% of the cases: 16.33% females, 12.08% males). In the unilateral type (regardless of gender), the protrusion was more common for the left sphenoid sinus – 10.81% of the patients (12.24% females, 9.4% males) than for the right – 3.38% of the patients (4.08% females, 2.68% males). Conclusions: Complicated structure of the paranasal sinuses, derived from the high prevalence of their anatomical variations, may perplex routine surgical interventions. Henceforth, referral for a CT scan is imperative in order to abate the risks associated with an invasive procedure in the said region.

Abstract

Background: Many reports have previously indicated the vast number of anatomical variations of the sphenoid sinuses, e.g. presence of the recesses. Notwithstanding, there are a few crucial neurovascular structures directly neighbouring with the sinuses. The following research aimed to evaluate frequency prevalence of the carotid canal’s protrusion into the sphenoid sinuses in adult population. Materials and methods: Computed tomography (CT) scans of the paranasal sinuses of 296 patients (147 females, 149 males) were analysed in this retrospective study. The patients did not present any pathologies in the sinuses. Spiral CT scanner­ ­Siemens Somatom Sensation 16 was used in the standard procedure in the option Siemens CARE Dose 4D. Results: Protrusion of the carotid canal was found in the majority of the patients – 55.74%, more frequently in males (65.1% of the patients) than in females (46.26% of the patients). The said variant – regardless of gender – was noted more often bilaterally (41.55% of the cases: 29.93% females, 53.02% males) than unilaterally (14.19% of the cases: 16.33% females, 12.08% males). In the unilateral type (regardless of gender), the protrusion was more common for the left sphenoid sinus – 10.81% of the patients (12.24% females, 9.4% males) than for the right – 3.38% of the patients (4.08% females, 2.68% males). Conclusions: Complicated structure of the paranasal sinuses, derived from the high prevalence of their anatomical variations, may perplex routine surgical interventions. Henceforth, referral for a CT scan is imperative in order to abate the risks associated with an invasive procedure in the said region.

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Keywords

sphenoid sinus, carotid canal, anatomy, radiology, laryngology

About this article
Title

Protrusion of the carotid canal into the sphenoid sinuses: evaluation before endonasal endoscopic sinus surgery

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2020-08-07

DOI

10.5603/FM.a2020.0086

Pubmed

32789847

Keywords

sphenoid sinus
carotid canal
anatomy
radiology
laryngology

Authors

J. Jaworek-Troć
J. A. Walocha
R. Chrzan
P. Żmuda
J. J. Zarzecki
A. Pękala
P. Depukat
E. Kucharska
M. Lipski
A. Curlej-Wądrzyk
M. P. Zarzecki

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