Back close

Two Cases of Rectus Sternalis Muscle

Publication Type : Journal Article

Thematic Areas : Medical Sciences

Publisher : Journal of Clinical and Diagnostic Research

Source : Journal of Clinical and Diagnostic Research, Volume 10(1):AD01-AD03. (2016)

Keywords : Mammogram, Muscular variant, Parasternalis, Rectus thoracicus superficialis

Campus : Kochi

School : School of Medicine

Department : Anatomy

Year : 2016

Abstract : The sternalis muscle, an uncommon anatomical variant of the chest wall musculature, though perhaps well known to anatomists, is quite unfamiliar to clinicians and radiologists despite attempts to highlight its clinical importance in recent years. During routine dissection for undergraduate medical teaching, in the department of anatomy, we came across two cases of sternalis muscle. The first was a unique case of unilateral right sternalis with contralateral insertion on the left sternocleidomastoid, and the second case where bilateral presence of the muscle was noted with ipsilateral insertion. The former was supplied by medial pectoral nerve and the latter by lower intercostal nerves. Usually present between the pectoral and superficial fasciae, wide ranging prevalence and morphology have been attributed to this muscular variant. Opinions differ on its development and nerve supply. Its presence can be misdiagnosed as a wide range of benign and malignant anterior chest wall lesions and tumours, but it is also of great use as a pedicle flap or flap microvascular anastomosis in reconstructive surgeries of anterior chest wall, head and neck and breast. In this paper, two cases of sternalis muscle which presented very differently from each other are discussed.

Cite this Research Publication : Dr. Minnie Pillay, Ramakrishnan, S., and Mayilswamy, M., “Two Cases of Rectus Sternalis Muscle”, Journal of Clinical and Diagnostic Research, vol. 10(1):AD01-AD03., 2016.

Admissions Apply Now