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Bilateral alar thoracic artery.

Mugurel Constantin Rusu1

  • 1Department of Anatomy and Embryology, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania. anatomon@hotmail.com

Folia Morphologica
|April 16, 2005
PubMed
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A rare bilateral alar thoracic artery variant was found, with unusual origins from the axillary and radial arteries. This anatomical variation requires consideration during thoracic and axillary fossa surgical procedures.

Area of Science:

  • Anatomy
  • Vascular Anatomy
  • Surgical Anatomy

Background:

  • Anatomical variations of the axillary artery and its branches are clinically significant.
  • The alar thoracic artery is a rare variant, with limited documentation in existing literature.

Observation:

  • A routine dissection revealed a superficial artery coursing subcutaneously along the anterior axillary border and inferior to the pectoralis major muscle bilaterally.
  • The right-sided artery originated from the third part of the axillary artery.
  • The left-sided artery originated from the proximal radial artery, which itself arose directly from the axillary artery.

Findings:

  • Bilateral presence of the alar thoracic artery, a rare finding.
  • Unusual origin of the left alar thoracic artery from a high-origin radial artery.

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  • Bilateral absence of the deep brachial artery was noted, with no other anomalies at this level.

    • Implications:

    • The presence of this bilateral alar thoracic artery variant may complicate surgical approaches to the axillary fossa.
    • Awareness of this anatomical variation is crucial for surgeons to prevent iatrogenic injury.
    • This case highlights the importance of detailed pre-operative anatomical assessment.