Hematoma of the sternomastoid muscle detected in a 16 days old infant requires :

Sternocleidomastoid hematome usually appears 7-10days after bih and is usually situated midposition of the muscle. This is a firm swelling of the sternomastoid muscle.It is related to streching of the muscle in difficult breech delivery or attempted delivery following shoulder dystocia or excessive lateral flexion if neck during normal delivery and subsequent bleeding.It may produce toicolis.The treatment is physiotherapy by streching in the opposite direction to prevent premature contracture. Refer page no 553 of Text book of obstetrics ,sheila balakrishnan,2 nd edition.