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Ultrasonography-Based Thyroidal and Perithyroidal Anatomy and Its Clinical Significance.

Ha EJ, Baek JH, Lee JH - Korean J Radiol (2015)

Bottom Line: For a safe and effective US-guided procedure, knowledge of neck anatomy, particularly that of the nerves, vessels, and other critical structures, is essential.Therefore, the aim of this article was to elucidate US-based thyroidal and perithyroidal anatomy, as well as its clinical significance in the use of prevention techniques for complications during the US-guided procedures.Knowledge of these areas may be helpful for maximizing the efficacy and minimizing the complications of US-guided procedures for the thyroid and other neck lesions.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Ajou University School of Medicine, Suwon 443-380, Korea.

ABSTRACT
Ultrasonography (US)-guided procedures such as ethanol ablation, radiofrequency ablation, laser ablation, selective nerve block, and core needle biopsy have been widely applied in the diagnosis and management of thyroid and neck lesions. For a safe and effective US-guided procedure, knowledge of neck anatomy, particularly that of the nerves, vessels, and other critical structures, is essential. However, most previous reports evaluated neck anatomy based on cadavers, computed tomography, or magnetic resonance imaging rather than US. Therefore, the aim of this article was to elucidate US-based thyroidal and perithyroidal anatomy, as well as its clinical significance in the use of prevention techniques for complications during the US-guided procedures. Knowledge of these areas may be helpful for maximizing the efficacy and minimizing the complications of US-guided procedures for the thyroid and other neck lesions.

No MeSH data available.


Related in: MedlinePlus

Normal and absence of brachiocephalic artery.A. Normal division of BCA into CCA and SA is called Y sign. B. In patients with non-recurrent laryngeal nerve, right aberrant SA (arrow) arises directly from aortic arch. BCA = brachiocephalic artery, CCA = common carotid artery, SA = subclavian artery
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Figure 6: Normal and absence of brachiocephalic artery.A. Normal division of BCA into CCA and SA is called Y sign. B. In patients with non-recurrent laryngeal nerve, right aberrant SA (arrow) arises directly from aortic arch. BCA = brachiocephalic artery, CCA = common carotid artery, SA = subclavian artery

Mentions: A variation in the RLN is called the non-recurrent laryngeal nerve (NRLN), which passes from the vagus nerve directly into the larynx at the level of the inferior horn of the thyroid cartilage. It reportedly occurs in 0.5-0.6% cases on the right side and 0.004% on the left side (27282930). Because the right NRLN is associated with the aberrant right subclavian artery arising directly from the aortic arch, and the left NRLN is associated with the situs inversus, anatomical variation could be suspected when a vascular anomaly is identified by CT or MRI (31). US can also predict the NRLN with identification of the absence of the brachiocephalic trunk (Fig. 6) (3233). The division of the brachiocephalic artery into the CCA and subclavian artery has been described as the Y sign. Hence, operators should look for the Y sign to rule out the possibility of an NRLN.


Ultrasonography-Based Thyroidal and Perithyroidal Anatomy and Its Clinical Significance.

Ha EJ, Baek JH, Lee JH - Korean J Radiol (2015)

Normal and absence of brachiocephalic artery.A. Normal division of BCA into CCA and SA is called Y sign. B. In patients with non-recurrent laryngeal nerve, right aberrant SA (arrow) arises directly from aortic arch. BCA = brachiocephalic artery, CCA = common carotid artery, SA = subclavian artery
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4499539&req=5

Figure 6: Normal and absence of brachiocephalic artery.A. Normal division of BCA into CCA and SA is called Y sign. B. In patients with non-recurrent laryngeal nerve, right aberrant SA (arrow) arises directly from aortic arch. BCA = brachiocephalic artery, CCA = common carotid artery, SA = subclavian artery
Mentions: A variation in the RLN is called the non-recurrent laryngeal nerve (NRLN), which passes from the vagus nerve directly into the larynx at the level of the inferior horn of the thyroid cartilage. It reportedly occurs in 0.5-0.6% cases on the right side and 0.004% on the left side (27282930). Because the right NRLN is associated with the aberrant right subclavian artery arising directly from the aortic arch, and the left NRLN is associated with the situs inversus, anatomical variation could be suspected when a vascular anomaly is identified by CT or MRI (31). US can also predict the NRLN with identification of the absence of the brachiocephalic trunk (Fig. 6) (3233). The division of the brachiocephalic artery into the CCA and subclavian artery has been described as the Y sign. Hence, operators should look for the Y sign to rule out the possibility of an NRLN.

Bottom Line: For a safe and effective US-guided procedure, knowledge of neck anatomy, particularly that of the nerves, vessels, and other critical structures, is essential.Therefore, the aim of this article was to elucidate US-based thyroidal and perithyroidal anatomy, as well as its clinical significance in the use of prevention techniques for complications during the US-guided procedures.Knowledge of these areas may be helpful for maximizing the efficacy and minimizing the complications of US-guided procedures for the thyroid and other neck lesions.

View Article: PubMed Central - PubMed

Affiliation: Department of Radiology, Ajou University School of Medicine, Suwon 443-380, Korea.

ABSTRACT
Ultrasonography (US)-guided procedures such as ethanol ablation, radiofrequency ablation, laser ablation, selective nerve block, and core needle biopsy have been widely applied in the diagnosis and management of thyroid and neck lesions. For a safe and effective US-guided procedure, knowledge of neck anatomy, particularly that of the nerves, vessels, and other critical structures, is essential. However, most previous reports evaluated neck anatomy based on cadavers, computed tomography, or magnetic resonance imaging rather than US. Therefore, the aim of this article was to elucidate US-based thyroidal and perithyroidal anatomy, as well as its clinical significance in the use of prevention techniques for complications during the US-guided procedures. Knowledge of these areas may be helpful for maximizing the efficacy and minimizing the complications of US-guided procedures for the thyroid and other neck lesions.

No MeSH data available.


Related in: MedlinePlus