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An accessory belly of the sternothyroid muscle on the anterior neck

  • Anatomic Variations
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Abstract

Purpose

Although anatomical variations were continuously found in the infrahyoid muscles, muscular variations of the sternothyroid muscle are still rare.

Materials and methods

We found an accessory belly of the sternothyroid muscle in a 46-year-old Korean male cadaver during routine dissection course, whose cause of death was ‘chronic renal failure’.

Results

The accessory belly attached to the oblique line of the lamina of the thyroid cartilage, covered the thyroid gland anteriorly, and attached to posterior surface of left sternothyroid muscle and pretracheal layer of the cervical fascia from side to side. It was supplied by the inferior thyroid artery from the left thyrocervical trunk and innervated by the nerve to sternothyroid muscle from the left ansa cervicalis.

Conclusion

The present case is worth because it requires special attention performing procedures on the anterior neck.

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Conflict of interest

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Author information

Authors and Affiliations

  1. Medical Course, School of Medicine, Jeju National University, Jeju-Si, Jeju-Do, Republic of Korea

    Dong Wan Kang & Yukyeng Byeon

  2. Department of Anatomy, School of Medicine, Jeju National University, 102 Jejudaehak-ro, Jeju-Si, 690-756, Jeju-Do, Republic of Korea

    Sang Pil Yoon

  3. Institute of Medical Science, Jeju National University, Jeju-Si, Jeju-Do, Republic of Korea

    Sang Pil Yoon

Authors
  1. Dong Wan Kang
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  2. Yukyeng Byeon
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  3. Sang Pil Yoon
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Correspondence to Sang Pil Yoon.

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Kang, D.W., Byeon, Y. & Yoon, S.P. An accessory belly of the sternothyroid muscle on the anterior neck. Surg Radiol Anat 37, 215–217 (2015). https://doi.org/10.1007/s00276-014-1295-5

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  • DOI: https://doi.org/10.1007/s00276-014-1295-5

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