Sternomastoid Tumor

During childbirth, injury to the sternomastoid muscle causes hematoma in the muscle which gets organized to form the swelling.

Clinical Features

  • It is seen in infants of 3 to 4 weeks of age.
  • The swelling is smooth, hard, non-tender and adherent to the muscle.
  • Head points towards the muscle of same side and chin towards the opposite side producing torticollis.Z

Differential Diagnosis:

  • Lymphadenitis due to either tuberculosis or suppurative infection
  • Rheumatic disorder
  • Burns
  • Spasmodic.

Treatment:

  • Division of the lower end of the sternomastoid muscle or excision of the muscle.