scholarly journals The most common anatomical variation of recurrent laryngeal nerve: extralaryngeal branching

2021 ◽  
Author(s):  
Mehmet Kostek
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Anatomical Variation ◽  
Laryngeal Nerve ◽  
Extralaryngeal Branching

scholarly journals Non-recurrent laryngeal nerve with a coexisting contralateral nerve demonstrating extralaryngeal branching

2017 ◽  
pp. bcr2016218280
Author(s):  
James D Constable ◽  
Srinivasalu Bathala ◽  
Jacob J Ahmed ◽  
Julian A McGlashan
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Laryngeal Nerve ◽  
Extralaryngeal Branching

scholarly journals Extralaryngeal branching of the recurrent laryngeal nerve: a meta-analysis of 28,387 nerves

2016 ◽  
Vol 401 (7) ◽  
pp. 913-923 ◽  
Author(s):  
Brandon Michael Henry ◽  
Jens Vikse ◽  
Matthew J. Graves ◽  
Silvia Sanna ◽  
Beatrice Sanna ◽  
...  
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Meta Analysis ◽  
Laryngeal Nerve ◽  
Extralaryngeal Branching

Does Extralaryngeal Branching Have An Impact on the Rate of Postoperative Transient or Permanent Recurrent Laryngeal Nerve Palsy?

2008 ◽  
Vol 33 (2) ◽  
pp. 261-265 ◽  
Author(s):  
Claudio Casella ◽  
Giacomo Pata ◽  
Riccardo Nascimbeni ◽  
Francesco Mittempergher ◽  
Bruno Salerni
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Nerve Palsy ◽  
Recurrent Laryngeal Nerve Palsy ◽  
Laryngeal Nerve ◽  
Laryngeal Nerve Palsy ◽  
Extralaryngeal Branching

scholarly journals Right non recurrent laryngeal nerve associated with anomalous origin of right subclavian artery and a bicarotid trunk

2016 ◽  
Vol 15 (3) ◽  
pp. 485-487 ◽  
Author(s):  
D Maruthupandian ◽  
K Karunakaran ◽  
V Arul
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Total Thyroidectomy ◽  
Subclavian Artery ◽  
Anatomical Variation ◽  
Medical Science ◽  
Laryngeal Nerve ◽  
Anomalous Origin ◽  
Nodular Goitre ◽  
Ct Angiogram ◽  
The Right

Non recurrent laryngeal nerve is a rare anatomical variation with an incidence in literature of 0.3 % to 1.6 % on the right side. This variation places the nerve at risk of inadvertent injury during head and neck surgeries. Awareness about this abnormality and meticulous dissection of the nerve in every case is the only way to stay safeguarded. Here we present a case of right non recurrent laryngeal nerve in a 32 years old female patient who underwent near total thyroidectomy for nontoxic multi nodular goitre. During surgery, the right recurrent laryngeal nerve could not be identified in its normal location. Further dissection revealed a non recurrent laryngeal nerve arising from the vagal trunk. A CT angiogram was done post operatively and showed an anomalous origin of the right subclavian artery as the last branch of the aortic arch and a bi-carotid trunk. Every surgeon operating on the neck should be aware of and anticipate this variation of the recurrent laryngeal nerve especially when the nerve cannot be identified in the normal location.Bangladesh Journal of Medical Science Vol.15(3) 2016 p.485-487

Thyroid tubercle of Zuckerkandl: anatomical and surgical experience from 79 thyroidectomies

2008 ◽  
Vol 123 (7) ◽  
pp. 768-771 ◽  
Author(s):  
C Page ◽  
P Cuvelier ◽  
A Biet ◽  
P Boute ◽  
M Laude ◽  
...  
Keyword(s):  
Thyroid Gland ◽  
Recurrent Laryngeal Nerve ◽  
Thyroid Surgery ◽  
Anatomical Variation ◽  
Lateral Lobe ◽  
Anatomical Variations ◽  
Anatomical Landmark ◽  
Laryngeal Nerve ◽  
Surgical Experience ◽  
The Right

AbstractObjective:To highlight a poorly known anatomical variation of the lateral lobe of the thyroid gland, which can be useful in identifying the recurrent laryngeal nerve during thyroid surgery.Materials and methods:We performed a three-year prospective study of 79 thyroid surgery patients. Great attention was paid to anatomical variations of the thyroid gland (i.e. the presence or absence of a distinct tubercle of Zuckerkandl), the recurrent laryngeal nerve and the location of the parathyroid glands.Results:A total of 71 right lobectomies and 74 left lobectomies were performed. Five tubercles of Zuckerkandl were identified (7.04 per cent of cases) and were useful in detecting the recurrent laryngeal nerve (but only on the right side).Conclusion:The tubercle of Zuckerkandl is a poorly known and variable anatomical feature of the thyroid gland which may not, in fact, be so rare. It arises for embryological reasons, and it can be a reliable anatomical landmark for identifying the recurrent laryngeal nerve during thyroid surgery. It should be included in the Nomina Anatomica as the ‘processus posterior glandulae thyroideae’ described by Zuckerkandl.

scholarly journals Anatomical Variation of Recurrent Laryngeal Nerve with Inferior Thyroid Artery: A Cross Sectional Study in Bangladeshi People

2021 ◽  
Vol 18 (1) ◽  
pp. 7-12
Author(s):  
Md Rabiul Islam ◽  
Tahmina Begum ◽  
Nazrul Islam ◽  
Md Moshabbirul Islam
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Anatomical Variation ◽  
Cross Sectional Study ◽  
Laryngeal Nerve ◽  
Inferior Thyroid Artery ◽  
Sectional Study ◽  
Cross Sectional ◽  
Group I ◽  
Group Ii ◽  
The Right

Background: Recurrent laryngeal nerve is varied anatomically with inferior thyroid artery. Objective: The purpose of the present study was to observe the anatomical variation of recurrent laryngeal nerve with inferior thyroid artery among Bangladeshi people. Methodology: This comparative cross-sectional study was conducted in the Department of Otolaryngology and Head-Neck surgery at Sylhet MAG Osmani Medical College Hospital, Sylhet, Bangladesh from January 2004 to December 2004 for a period of one (01) year. Patients whose recurrent laryngeal nerve was identified during thyroidectomy due to various pathological conditions of thyroid gland were selected as group I. Again, the dead body which were undergone dissection were designated as group II. All the patients whose recurrent laryngeal nerve and inferior thyroid artery were identified during total, near total, sub-total, hemithyroidectomised or lobectomised were included in this study. Result: A total number of 32 patients were recruited for this study. On the left side nerve was found anteriorly in 2(10.53%), in between in 4(21.05%) and posteriorly in 13(68.42%). On the right side-nerve was found anteriorly in 7(30.43%), in between in 6(26.09%) and posteriorly in 10(43.48%). In this series nerve was seen posterior relation more than other two relations and anterior relation more on right side whereas posterior relation on left side, anterior relation more than in between relation on right side but reverse on left side. In group II On the left side nerve was found anteriorly in 2(6.25%), in between in 6(18.75%) and posteriorly in 24(75%). On the right side-nerve was found anteriorly in 8(25%), in between in 9(28.12%), and posteriorly in 10(46.88%). Conclusion: In conclusion each recurrent laryngeal nerve lies posterior to the inferior thyroid artery in the majority of the occasions whereas the nerve lies anterior to the branches of the inferior thyroid artery less commonly except right side of both study group. Journal of Science Foundation, January 2020;18(1):7-12

Non-Recurrent Laryngeal Nerve

2015 ◽  
Vol 87 (7) ◽  
Author(s):  
Grzegorz Buła ◽  
Ryszard Mucha ◽  
Michał Paliga ◽  
Henryk Koziołek ◽  
Zbigniew Niedzielski ◽  
...  
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Anatomical Variation ◽  
Nodular Goiter ◽  
Laryngeal Nerve ◽  
Main Trunk ◽  
Identification Process ◽  
Toxic Nodular Goiter ◽  
Recurrent Laryngeal Nerves ◽  
The Right ◽  
Irreversible Nature

Abstractwas to assess the frequency of non-recurrent laryngeal nerves (Non-RLN).A total of 6110 patients were operated in our hospital between 1 January 2005 and 31 December 2013 for various goiters (5429) and various types of hyperparathyroidism (618). Laryngeal nerve was exposed during operation in 1700 patients from superior aperture of the chest to superior aperture of the larynx. Identification process of RLN was started with dissecting inferior thyroid artery (ITA) and its junction with the nerve. Then main trunk of the nerve was exposed backwards till the region of superior aperture of the chest together with the end portion till the nerve outlet to the larynx.In the group of 1700 patients, RLN was exposed bilaterally in 1400 (82.4%) and unilaterally in 300 (17.6%). In the group of 3100 dissected RLNs the course of RLN was observed on the right side in 1710 patients and on the left in 1390. Irreversible nature RLN was shown in four cases (0.1%) – four women (02%) aged 42-55 (mean 49.3) – three operated for non-toxic nodular goiter and one for primary hyperparathyroidism. Each time the Non-RLN was seen on the right side. The other patients manifested recurrent character RLN. Moreover, interstitial course of RLN was found on the left side in one man.Non recurrent laryngeal nerve is a rare anatomical variation, occurring more frequently on the right side. Surgeon during surgery of the thyroid and parathyroid glands should be aware of its existence to avoid damage.

scholarly journals Extralaryngeal branching of the recurrent laryngeal nerve. Autopsy case series

2021 ◽  
Vol 14 (4) ◽  
pp. 4-18
Author(s):  
Aleksandr A. Kuprin ◽  
Viktor Y. Malyuga ◽  
Timur A. Britvin ◽  
Ivan O. Abuladze
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Vocal Cord ◽  
Case Series ◽  
Laryngeal Nerve ◽  
Inferior Thyroid Artery ◽  
Autopsy Case ◽  
Anatomical Features ◽  
Anatomical Variants ◽  
Vocal Cord Paresis ◽  
Extralaryngeal Branching

Background. The thesis «thyroid surgery is the surgery of the recurrent laryngeal nerve», which was defined in the XX ­century, remains relevant to this day. Thus, despite the use of modern scientific and technological achievements, vocal cord paresis is diagnosed on average in 9.8% patients after thyroid and parathyroid surgery.According to many authors, the main problem which a surgeon encounters is a difficult and sometimes individual anatomy of the recurrent laryngeal nerve. For example, in one study authors identified 28 variants of relationships between the ­recurrent laryngeal nerve and the inferior thyroid artery. In a recent meta-analysis, it was noted that the frequency of extralaryngeal branching remains underestimated and reaches 73% of cases. Anatomical variants of the recurrent laryngeal nerve or its thin branches, which have not been noticed in time, can lead to inevitable consequences — to nerve injury and a laryngeal dysfunctions, and if anatomical features are not detected on both sides — to a tragedy.Aim. The aim of this study is to determine anatomical variants of the extralaryngeal branches of the recurrent laryngeal nerve and their frequency in autopsy case series.Materials and methods. 46 (100%) recurrent laryngeal nerves were dissected in 23 cadavers. Their path was traced, their relationships with the inferior thyroid artery were determined, and the extralaryngeal branches of the recurrent laryngeal nerve were identified.Results. Few extralaryngeal branches of the recurrent laryngeal nerve were identified during dissection: tracheoesophageal branches, laryngeal branches, aberrant branches. Tracheoesophageal branches were determined in all cadavers. In 37 (80.4%) cases the recurrent laryngeal nerve had got two or more extralaryngeal laryngeal branches. In 6 (13.0%) cases aberrant branches were presented.The inferior thyroid artery was detected in 42 (91.3%) cases. The vessel was in close location with the recurrent laryngeal nerve, forming a neuro-arterial chiasm. In 39.1% of cases the recurrent laryngeal nerve was located between the branches of the inferior thyroid artery, in 39.1% of cases — deeper than the artery, and in 10.9% of cases — more superficial than the artery.Conclusion. The variable anatomical configuration of the recurrent laryngeal nerve inevitably causes difficulties during intraoperative nerve dissection. Tardy identification of these anatomical features can lead to the injury of nerves or its branches, which determines the amount of postoperative vocal cord paresis.

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