DOI: 10.36347/sjmcr.2015.v03i09.023

Pages: 865-867

A unilateral (Left side) additional Clavicular head of sternocleidomastoid (SCM) was found during routine dissection of head and neck region in 43 years old male cadaver. The additional slip was extended its origin almost whole the length of middle third of clavicle. The fusion failure or abnormal mesodermal splitting during development may be the reason for present variation at origin of sternocleidomastoid. The internal jugular can be approached at the lesser supra clavicular fossa for cannulation during central venous access, temporary haemodialysis, and the placement of inferior vena cava filters. The anatomical knowledge of the SCM and its variations is identical significant for surgeons during branchial cyst removal, while dealing with myocutaneous flap.