Anat Cell Biol.  2016 Jun;49(2):138-142. 10.5115/acb.2016.49.2.138.

Anatomical considerations of the superior thyroid artery: its origins, variations, and position relative to the hyoid bone and thyroid cartilage

Affiliations
  • 1Department of Occupational Therapy, Semyung University, Jecheon, Korea. apolius@naver.com

Abstract

The aim of this study was to provide accurate anatomical descriptions of the overall anatomy of the superior thyroid artery (STA), its relationship to other structures, and its driving patterns. Detailed dissection was performed on thirty specimens of adult's cadaveric neck specimens and each dissected specimen was carefully measured the following patterns and distances using digital and ruler. The superior thyroid, lingual, and facial arteries arise independently from the external carotid artery (ECA), but can also arise together, as the thyrolingual or linguofacial trunk. We observed that 83.3% of STAs arose independently from the major artery, while 16.7% of the cases arose from thyrolingual or linguofacial trunk. We also measured the distance of STA from its major artery. The origin of the STA from the ECA was 0.9±0.4 mm below the hyoid bone. The STA was 4.4±0.5 mm distal to the midline at the level of the laryngeal prominence and 3.1±0.6 mm distal to the midline at the level of the inferior border of thyroid cartilage. The distance between STA and the midline was similar at the level of the hyoid bone and the thyroid cartilage. Also, when the STA is near the inferior border of the thyroid cartilage, it travels at a steep angle to the midline. This latter point may be particularly important in thyroidectomies. We hope that anatomical information provided here will enhance the success of, and minimize complications in, surgeries that involve STA.

Keyword

Superior thyroid artery; Driving patterns; Distance; Cadaveric study

MeSH Terms

Arteries*
Cadaver
Carotid Artery, External
Hope
Hyoid Bone*
Lingual Thyroid
Neck
Thyroid Cartilage*
Thyroid Gland*
Thyroidectomy

Figure

  • Fig. 1 Horizontal and vertical distances of the superior thyroid artery from its associated structures. CA, carotid artery; ECA, external carotid artery; ICA, internal carotid artery; STA, superior thyroid artery.

  • Fig. 2 Patterns of origin of the superior thyroid artery (STA). The STA can arise from the external carotid artery (type I) (A), from the carotid bifurcation (CB) (type II) (B), or from the common carotid artery (type III) (C). LP, laryngeal prominence of thyroid cartilage.


Reference

1. Anthony JP, Argenta P, Trabulsy PP, Lin RY, Mathes SJ. The arterial anatomy of larynx transplantation: microsurgical revascularization of the larynx. Clin Anat. 1996; 9:155–159.
2. Dedecjus M, Tazbir J, Kaurzel Z, Lewinski A, Strozyk G, Brzezinski J. Selective embolization of thyroid arteries as a preresective and palliative treatment of thyroid cancer. Endocr Relat Cancer. 2007; 14:847–852.
3. Hayashi N, Hori E, Ohtani Y, Ohtani O, Kuwayama N, Endo S. Surgical anatomy of the cervical carotid artery for carotid endarterectomy. Neurol Med Chir (Tokyo). 2005; 45:25–29.
4. Jeganath V, McElwaine JG, Stewart P. Ruptured superior thyroid artery from central vein cannulation: treatment by coil embolization. Br J Anaesth. 2001; 87:302–305.
5. Ozgur Z, Govsa F, Celik S, Ozgur T. Clinically relevant variations of the superior thyroid artery: an anatomic guide for surgical neck dissection. Surg Radiol Anat. 2009; 31:151–159.
6. Akyol MU, Koc C, Ozcan M, Ozdem C. Superior thyroid artery arising from the common carotid artery. Otolaryngol Head Neck Surg. 1997; 116(6 Pt 1):701.
7. Gupta P, Bhalla AS, Thulkar S, Kumar A, Mohanti BK, Thakar A, Sharma A. Variations in superior thyroid artery: a selective angiographic study. Indian J Radiol Imaging. 2014; 24:66–71.
8. Vazquez T, Cobiella R, Maranillo E, Valderrama FJ, McHanwell S, Parkin I, Sañudo JR. Anatomical variations of the superior thyroid and superior laryngeal arteries. Head Neck. 2009; 31:1078–1085.
9. Ozgüner G, Sulak O. Arterial supply to the thyroid gland and the relationship between the recurrent laryngeal nerve and the inferior thyroid artery in human fetal cadavers. Clin Anat. 2014; 27:1185–1192.
10. Natsis K, Raikos A, Foundos I, Noussios G, Lazaridis N, Njau SN. Superior thyroid artery origin in Caucasian Greeks: a new classification proposal and review of the literature. Clin Anat. 2011; 24:699–705.
11. Won HS, Han SH, Oh CS, Chung IH. Superior and middle thyroid arteries arising from the common carotid artery. Surg Radiol Anat. 2011; 33:645–647.
12. Banna M, Lasjaunias P. The arteries of the lingual thyroid: angiographic findings and anatomic variations. AJNR Am J Neuroradiol. 1990; 11:730–732.
13. Toni R, Della Casa C, Castorina S, Malaguti A, Mosca S, Roti E, Valenti G. A meta-analysis of superior thyroid artery variations in different human groups and their clinical implications. Ann Anat. 2004; 186:255–262.
14. Ozgur Z, Govsa F, Ozgur T. Anatomic evaluation of the carotid artery bifurcation in cadavers: implications for open and endovascular therapy. Surg Radiol Anat. 2008; 30:475–480.
15. Aggarwal NR, Krishnamoorthy T, Devasia B, Menon G, Chandrasekhar K. Variant origin of superior thyroid artery, occipital artery and ascending pharyngeal artery from a common trunk from the cervical segment of internal carotid artery. Surg Radiol Anat. 2006; 28:650–653.
16. Anagnostopoulou S, Mavridis I. Emerging patterns of the human superior thyroid artery and review of its clinical anatomy. Surg Radiol Anat. 2014; 36:33–38.
17. Varsamidis K, Varsamidou E, Mavropoulos G. Color Doppler sonography in the detection of parathyroid adenomas. Head Neck. 1999; 21:648–651.
18. Sosa JA, Bowman HM, Tielsch JM, Powe NR, Gordon TA, Udelsman R. The importance of surgeon experience for clinical and economic outcomes from thyroidectomy. Ann Surg. 1998; 228:320–330.
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