scholarly journals Topographic and anatomical features of muscular and vascular structures in lateral cervical region during prenatal period of human ontogenesis

Morphologia ◽  
2021 ◽  
Vol 15 (3) ◽  
pp. 162-166
Author(s):  
O.V. Tsyhykalo ◽  
I.S. Popova ◽  
A.A. Khodorovska ◽  
G.M. Chernikova

Background. One of topical areas of morphological research is features of topographic a relationships of the vascular, nervous, muscular, fascial and cartilaginous structures of the neck in prenatal period of human ontogenesis, as data on their formation at different stages of development will improve diagnostic methods of visualization and surgical correction of congenital and acquired pathologies of head and neck. Objective. To find out the peculiarities of synthopia of vascular and muscular structures of the lateral cervical region in human prefetuses. Methods. 9 human prenatal specimens aged 9-12 weeks of prenatal development have been studied by using a set of morphological methods, according to existing bioethical norms. Results. During 9th week of development, bony and musclar boundaries of the lateral triangle of the neck, the carotid vagina, and the components of the vascular-nervous bundle of the neck have been determined. Within the carotid triangle, the external carotid artery is located superficially; it is crossed frontally by the cervical branch of facial nerve and the sublingual nerve. The superior thyroid artery departs from the external carotid artery at the level of the cartilaginous model of the large horns of hyoid bone and passes to the rudiment of thyroid gland. Retropharyngeal space is found at 9th week of development, moderately filled with adipose tissue. The anterior vertebral plate of the cervical fascia forms the bottom for posterior triangle of neck. Conclusion. The lateral cervical region in human prefetuses is represented by a multilayered topographic zone with formed boundaries and contents. Cervical fascia forms carotid vagina within the carotid triangle, and pharyngeal space. The course of blood vessels and nerves within the lateral cervical region is variable. Three-dimensional reconstructions of prefetuses serve as evidence of the early formation of definitive topographic connections within early bony and cartilaginous models in relation to the muscles of the anterior and lateral cervical regions.

2021 ◽  
Vol 8 (22) ◽  
pp. 1780-1785
Author(s):  
Manju Sudhakaran ◽  
Mini Alikunju ◽  
Vandana Latha Raveendran ◽  
Umesan Kannanvilakom Govindapillai

BACKGROUND External carotid arteries account for a major share of arterial supply of head and neck regions. As variations are frequently observed in the branching pattern of external carotid artery, surgeons, radiologists and anaesthetists often encounter difficulties in various procedures of head and neck. The purpose of this study is to describe the variations in the branching pattern of external carotid artery as observed in South Indian population which definitely reduces its iatrogenic injuries associated with surgical and radiological procedures of head and neck. METHODS This is cross-sectional descriptive study. Bilateral neck dissection was done on twenty-two formalin fixed cadavers to study the branching pattern of external carotid artery during a period of two years in the Department of Anatomy in Government Medical College, Alappuzha. Common carotid, external carotid and internal carotid arteries were dissected. All the branches of external carotid artery were traced and the variations were noted. The distance between carotid bifurcation and point of origin of individual branches of external carotid were measured and statistically analyzed. RESULTS In the present study along with normal branching pattern of external carotid artery, variations like origin of superior thyroid artery from common carotid artery and also from carotid bifurcation were seen. A common linguofacial trunk and direct origin of superior laryngeal artery from external carotid artery were also observed. CONCLUSIONS Prior knowledge of the variations will be helpful to surgeons and anaesthetists while dealing with these vessels during procedures of head and neck regions. KEYWORDS External Carotid Artery, Carotid Bifurcation, Superior Thyroid Artery, Linguofacial Trunk


2018 ◽  
Vol 17 (4) ◽  
pp. 290-295 ◽  
Author(s):  
Ranjith Sreedharan ◽  
Lalu Krishna ◽  
Ashwija Shetty

Abstract Background The major arterial supply to the thyroid gland is from the superior and inferior thyroid arteries, arising from the external carotid artery and the thyrocervical trunk respectively. The external laryngeal nerve runs in close proximity to the origin of the superior thyroid artery in relation to the thyroid gland. The superior thyroid artery is clinically important in head and neck surgeries. Objectives To locate the origin of the superior thyroid artery, because wide variability is reported. To provide knowledge of possible variations in its origin, because it is important for surgical procedures in the neck. Methods The origin of the superior thyroid artery was studied by dissecting sixty adult human hemineck specimens from donated cadavers in a Department of Anatomy. Results The highest incidence observed was origin of the superior thyroid artery from the external carotid artery (88.33%), whereas origin from the common carotid bifurcation only occurred in 8.33%. However, in 3.33% of cases, the superior thyroid artery originated from the common carotid artery and in a single case, the external laryngeal nerve did not cross the stem of the superior thyroid artery at all, but ran ventral and parallel to the artery. Conclusions It is important to rule out anomalous origin of superior thyroid artery and verify its relationship to the external laryngeal nerve prior to ligation of the artery in thyroid surgeries, in order to prevent iatrogenic injuries. Moreover, because anomalous origins of the superior thyroid artery are only anatomic variants, thorough knowledge of these is decisive for head and neck surgeries.


2015 ◽  
Vol 32 (02) ◽  
pp. 108-110
Author(s):  
L. Khanal ◽  
P. Baral ◽  
P. Yadav ◽  
A. Pandeya ◽  
S. Shah ◽  
...  

AbstractDevelopmental anomalies in the origin and branching pattern of the external carotid artery are not common. The level of the bifurcation of the common carotid artery and also the variations in the origin/branching pattern of the external carotid artery are well known and documented. During a routine dissection of middle aged male cadaver in department of Anatomy in BP Koirala Institute of Health Sciences (BPKIHS) The clinically-relevant variations to be noted were the high origin and anomalous course of the facial artery, superior thyroid artery arising as a branch of Common Carotid artery, high origin of ascending pharyngeal artery, posterior auricular artery and direct glandular branches to the Submandibular gland. Such anatomical variations of external carotid artery are important for surgeons in surgeries of head and neck region and also for radiologists in the image interpretation of the face and neck region.


2020 ◽  
pp. 1-2
Author(s):  
Chetan Sahni ◽  
Shivshanker S

Thyroid surgeries are most common neck surgeries; hence thorough knowledge of the variations in blood supply of this gland to the surgeons is very important to prevent any alarming hemorrhage or iatrogenic damage. We found a variation in origin of superior thyroid artery on right side during routine dissection on an adult male cadaver in the Department of Anatomy, A.I.I.M.S, NewDelhi. Left superior thyroid artery was normal. Right side, superior thyroid artery was arising from common carotid artery instead of external carotid artery, just proximal to the bifurcation of common carotid artery. This variant branching pattern of superior thyroid artery is very rare. The inferior thyroid arteries did not show any unusual origin. Knowledge of such arterial variations related to the thyroid gland is immensely helpful to the surgeons to avoid damage of the vital organs in this region.


VASA ◽  
1999 ◽  
Vol 28 (4) ◽  
pp. 297-300 ◽  
Author(s):  
Bürger ◽  
Tautenhahn ◽  
Grote ◽  
Halloul

Trauma-induced arteriovenous (av) communications in the cervical region involving the external carotid artery and the jugular vein are exceptionally rare. Moreover, an iatrogenic av fistula between the vertebral artery and the vein after insertion of a venous catheter into the internal jugular vein is described. The discussion includes the clinical presentation, diagnosis and management of such rare av fistulas.


2011 ◽  
Vol 77 (2) ◽  
pp. 151-154 ◽  
Author(s):  
Theodore G. Troupis ◽  
Dimitrios Dimitroulis ◽  
Alexandros Paraschos ◽  
Adamantios Michalinos ◽  
Vassilis Protogerou ◽  
...  

The present study describes analytically a rare case in which lingual and facial arteries arise together from an external carotid artery in a common trunk. Thirty anatomic dissections were performed on 15 cadavers in the macroscopic laboratory in the Department of Anatomy of the Medical School of National and Kapodistrian University of Athens. One common trunk from which originated lingual and facial arteries was found. The frequency of this morphology is measured at 6 per cent. The length of the common trunk is measured at 7.3 mm between its origin and its diversion at the facial artery and lingual artery, its diameter at 2.8 mm, its distance from carotid bifurcation at 7.9 mm, and from the superior thyroid artery at 3.3 mm. At the left side of the neck region, facial and lingual arteries arose separately. The anatomic variations of the branching pattern of the external carotid artery and the micrometric values of the vessels are especially important as a result of the numerous operations performed in the neck region that implicate various specialties such as general surgery, head and neck surgery, plastic surgery, and maxillofacial surgery.


2021 ◽  
Vol 59 (241) ◽  
pp. 906-909
Author(s):  
Nitasha Sharma ◽  
Ruku Pandit ◽  
Bhima Neupane ◽  
Ram Prakash Sah ◽  
Laxmi Bhattarai ◽  
...  

Introduction: External carotid artery originated superior thyroid artery are frequently documented in classical anatomical, surgical and radiological textbooks. Knowledge of anatomical variations, proper identification of superior thyroid arteries is very important to avoid major complications during and after neck surgeries. The aim of the study is to find out the prevalence of right superior thyroid artery originating from right external carotid artery in cadavers of a Medical College in Western Nepal. Methods: A descriptive cross-sectional study was carried out at the department of anatomy in Universal College of Medical Sciences, Bhairahawa, Nepal from October 2020 to January 2021 after ethical clearance from the same institution (IRC UCMS, Ref: UCMS/IRC/078/20). Variations in origin of superior thyroid arteries were observed, recorded and photographed. Convenient sampling method was used. Data was analyzed using Microsoft Excel 2016. Point estimate at 90% Confidence Interval was calculated along with frequency and percentage. Results: Out of 30 right superior thyroid arteries of 30 cadavers, 27 (90%) at 90% Confidence Interval (80.22-96.44) originates from right external carotid artery. Conclusions: In our study we observed that almost nine tenths of right superior thyroid arteries originated from the right external carotid artery which was relatively high in comparison to other studies. Thus, Extensive knowledge of variations in origin of superior thyroid artery is important for surgeons prior to various interventional surgeries.


Author(s):  
Rakesh Kumar Diwan ◽  
Archana Rani ◽  
Jyoti Chopra ◽  
Navneet Kumar

The complicated process of angiogenesis and remodelling which includes annexation and regression of vessels may give rise to variations in the branches of external carotid artery. The knowledge of variations in the branching pattern of external carotid artery (ECA) is important for surgical procedures in the neck region, such as radial neck dissection, catheterization, reconstruction of aneurysm, carotid endarterectomy and intervention radiology. The anatomical consequences of anomalous branching pattern of external carotid artery may have important clinical implications. A rare, common branch of the ECA, a thyro-linguo-facial trunk was found on right side in a 65 years old male cadaver during routine dissection. After giving a branch to thyroid gland as superior thyroid artery, this trunk ran forwards and medially as linguo-facial trunk and divided into lingual and facial arteries. The hypoglossal nerve was crossing the linguo-facial trunk.


2013 ◽  
Vol 19 (3) ◽  
pp. 124-129
Author(s):  
P. Gavrilidou ◽  
D.M. Iliescu ◽  
Baz R. ◽  
L.M. Rusali ◽  
P. Bordei

Abstract the methods of dissection and analysis of angioCT’s. Each of the details was analyzed comparatively on both sides of the body assessing: the origin of the superior thyroid artery in relation to the carotid bifurcation, the face of the external carotid artery that gives origin and the traject of the artery from the origin to the glandular parenchyma. The origin of the superior thyroid artery was evaluated on a number of 64 cases, most frequently having its origin from the external carotid artery, an aspect met 53.125 % of cases, at a distance that was between 1-18 mm. In 28.125 % of cases the superior thyroid artery had its origin in the common carotid trunk at a distance of 1-10 mm caudal to the terminal bifurcation of the common carotid. In 18.75 % of cases, the thyroid artery originated from the carotid bifurcation, which thus ends up by trifurcation. The side of the vessel that emerges the superior thyroid artery was assessed on 42 cases; most commonly the superior thyroid artery having its origin on the medial face, an aspect found in 66.67 % of cases; in 23.81 % of cases originated from the posterior medial and only two cases (4.76 % of cases), both on the left side(8.70 % of cases on the left), the origin of the superior thyroid artery was located on the anterior, respectively faces of the common carotid artery. The traject of the superior thyroid artery was followed on 53 cases, in most cases the artery showing initially a horizontal traject (transverse) towards medially for 1-4 cm, then became obliquely downward, an aspect met in 28.30 % of cases and in 22.64 % of cases, the artery was obliquely downward from its origin. In 11.32 % of cases the traject was obliquely ascending and in 9.43 % of cases the artery was initially obliquely upward for 2-3 cm, after which became transverse. For the remaining 28.30 % of the cases we have met a number of other 5 different patterns of traject but in a small percentage for each of them (5.66% of cases).


2019 ◽  
Vol 56 (1) ◽  
pp. 115-119
Author(s):  
Petru Bordei ◽  
Dan Marcel Iliescu ◽  
Lavinia Maria Rusali ◽  
Razvan Hainarosie ◽  
Radu Cristian Jecan ◽  
...  

The superior thyroid artery shows a great variability in what concerns its origin. Most often, it appears as an independent branch of the external carotid artery, as its first collateral branch, or directly from the common carotid or at its terminal level. The superior thyroid artery origin was evaluated on 144 cases, using as study methods the dissection (39 cases), the plastic injection (22 cases) and the CT angiography evaluation (83 cases). It was studied, by percentage, the originating artery of the superior thyroid artery, the relation to the bifurcation of the common carotid artery, the neighboring arterial branches and the surface of the external carotid on which originated, the caliber of the external carotid artery before and after the origin of the superior thyroid artery. Most commonly, in 89 cases (61.80%), we describe the origin of the superior thyroid artery from the external carotid artery; from the common carotid artery originated 31 superior thyroid arteries (21.53%); at the level of the bifurcation of the common carotid artery, the superior thyroid artery had its origin in 21 cases (14.58%); in 2 cases (1.39%) we encountered the superior thyroid artery originating from a thyro-lingual trunk and in one case (0.69%), we met a thyro-linguo-facial trunk. The superior thyroid arteries may originate as an independent artery or as arterial trunks in varying proportions. When the origin of the superior thyroid artery is from the terminal common carotid, we propose to use the expression of terminal branching or the common carotid artery trifurcation. The results of our study are similar to those found in international literature, with statistical differences that may be attributed primarily to the total number of cases on which we worked and also working methods or may be attributed to other causes, such as the geographic area where the study was conducted and the amount of time the results were obtained.


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