Published Paper Details:

BACKGROUND The sternalis muscle is a rare anatomical variant of the anterior chest wall located superficial to the pectoralis major muscle. The incidence of the sternalis muscle varies among different populations, and it may occur unilaterally or bilaterally. Although usually asymptomatic, its presence is of clinical significance because it may be mistaken for a pathological mass during radiological examinations and may be encountered during thoracic and breast surgeries. MATERIALS AND METHODS During routine cadaveric dissection conducted as a part of a dissertation study in the Department of Rachana Shareera, Government Ayurveda Medical College Bengaluru, the anterior thoracic wall of a 72-year-old male cadaver was carefully examined. Anatomical variations encountered during dissection were documented and photographed. RESULTS A unilateral sternalis muscle was identified on the right side of the anterior chest wall. The muscle was located parallel to the sternum and superficial to the pectoralis major muscle. Its morphology, attachments, and anatomical relations were observed and recorded. CONCLUSION The present finding highlights the importance of recognizing the sternalis muscle as a rare anatomical variation. Knowledge of its occurrence is valuable for anatomists, radiologists, and surgeons to avoid diagnostic errors and facilitate appropriate surgical planning.