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A rare cadaveric case of a duplicated internal thoracic artery

Anatomy & Cell Biology 2020년 53권 3호 p.366 ~ 368
Nanthakumar Harry, Iwanaga Joe, Dumont Aaron S., Tubbs R. Shane,
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 ( Nanthakumar Harry ) - Tulane University School of Medicine Department of Neurosurgery
 ( Iwanaga Joe ) - Tulane University School of Medicine Department of Neurosurgery
 ( Dumont Aaron S. ) - Tulane University School of Medicine Department of Neurosurgery
 ( Tubbs R. Shane ) - Tulane University School of Medicine Department of Neurosurgery

Abstract


The internal thoracic artery (ITA) arises from the subclavian artery and terminates as the musculophrenic and inferior epigastric arteries. During routine cadaveric dissection, an aberrant left ITA was discovered. A medial and a lateral branch of the ITA branched directly off the subclavian artery as opposed to bifurcating at the 6th or 7th intercostal space. To our knowledge, this is the first reported case of this particular ITA variation arising from the third part of the subclavian artery. Additionally, such a variant might also be considered a high bifurcation of the ITA. Our report examines this variation and its potential implications for coronary artery bypass grafts where the ITA is commonly used.

키워드

Mammary arteries; Subclavian artery; Coronary artery bypass

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