The sternocleidomastoid tumor presents as a firm, nontender mass in the lower third of the sternocleidomastoid muscle (SCM). Histologically, sternocleidomastoid tumor is not a tumor; it demonstrates collagen fibrils, spindle-shaped… Click to show full abstract
The sternocleidomastoid tumor presents as a firm, nontender mass in the lower third of the sternocleidomastoid muscle (SCM). Histologically, sternocleidomastoid tumor is not a tumor; it demonstrates collagen fibrils, spindle-shaped fibroblasts, and atrophy of skeletal muscle. It typically presents in infants between 1 and 8 weeks of age as either unilateral or bilateral neck swelling. When unilateral, it may present with torticollis. Management includes physical therapy, massage, and heat. Surgery is indicated only if this treatment fails.
               
Click one of the above tabs to view related content.