A digastric sternalis muscle: a rare finding

Guru, Anitha and D’Souza, M and Kumar, Naveen and Nayak, Satheesha B and Patil, Jyothsna and Shanthakumar, SR and Aithal, Ashwini P (2013) A digastric sternalis muscle: a rare finding. OA Case Reports, 2 (17). pp. 1-2.

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Introduction:This paper reports a rare case of a digastric sternalis muscle. Case report: During routine cadaveric dissection of the thorax, an unusually large double-bellied muscle with an intervening tendon was observed on the anterior thoracic wall. The muscle was similar in position to the sternalis muscle except that, in this case, the muscle crossed the midline. Its lower belly was attached below to the left 7th costochondral junction and continued above as an intermediate tendon. The tendon then crossed the midline and gave rise to another smaller upper belly, which was placed between the manubrial and sternal fibres of the right pectoralis major. The upper belly then became continuous with the right pectoralis major muscle. The muscle, as it crossed the midline, gave two tendinous slips to the left pectoralis major muscle. Conclusion: The sternalis muscle and its variants are stated to have a variety of appearances that should be familiar to the radiologist to avoid confusion with a malignant lesion.

Item Type: Article
Uncontrolled Keywords: Sternalis; pectoral region; pectoralis major; digastric.
Subjects: Medicine > MMMC Manipal > Anatomy
Depositing User: KMC Manipal
Date Deposited: 06 Jun 2014 04:19
Last Modified: 06 Jun 2014 04:19
URI: http://eprints.manipal.edu/id/eprint/139667

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