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. 2013 Sep;7(9):1994-5.
doi: 10.7860/JCDR/2013/6033.3381. Epub 2013 Sep 10.

An accessory muscle of pectoral region: a case report

B M Bannur  1 , Nagaraj Mallashetty, Preetish Endigeri
Affiliations

An accessory muscle of pectoral region: a case report

B M Bannur et al. J Clin Diagn Res. 2013 Sep.

Abstract

Among the variations of pectoral muscles, this case appears to be unique in the literature. This was a case of an accessory pectoral muscle which was located between pectoralis major and pectoralis minor muscles, which was discovered during a routine anatomy dissection. The accessory muscle originated from 6(th) and 7(th) ribs at costo-chondral junction, which travelled supero-laterally and inserted by fusing with fibres of pectoralis minor. This unusual muscle holds importance for surgeons while they perform dissectomies, in avoiding complications.

Keywords: Accessory pectoral muscle; Costo-chondral junction; Medial pectoral nerve; Pectoralis major; Pectoralis minor.

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Figures

[Table/Fig-1]:
[Table/Fig-1]:
Pectoralis major (2) Pectoralis minor (3) Accessory pectoral muscle
[Table/Fig-2]:
[Table/Fig-2]:
Pectoralis major (2) Pectoralis minor (3) Accessory pectoral muscle. The arrow indicates the medial pectoral nerve
See this image and copyright information in PMC

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References

    1. Standring S. Gray’s Anatomy. 40th ed. Churchill Livingston: Elsevier; 2008. Pectoral girdle, shoulder region and axilla. In: Standring S, editor; pp. 807–8.
    1. Sweeney LJ. Basic concepts of in embryology. McGraw-Hill; 1998. p. 834.
    1. Carlson BM. Human embryology and developmental biology. Mosby; 2004. pp. 224–5.
    1. Clarkson P. Poland’s syndactyly. Guys Hosp Rep. 1962;111:335–46. - PubMed
    1. Paraskevas GK, Raikos A. Bilateral pectoral musculature malformations with concomitant vascular anamoly. Folia Marphol. 2010;69(3):187–91. - PubMed

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