Abstract
Fibromatosis colli is a rare, benign mass of the sternocleidomastoid muscle (SCM), typically diagnosed in infants between weeks 1 to 8 of life. Physical examination of the infant will exhibit a firm lump on the affected side of the neck. The mass is typically unilateral and may be accompanied by torticollis. We present two cases of infants with fibromatosis colli. Sonographic examination is the preferred initial non-invasive diagnostic procedure, with 100% sensitivity. Ultrasound can confirm the diagnosis, avoiding unnecessary invasive interventions. Early diagnosis can prevent complications such as plagiocephaly, facial asymmetry, and scoliosis. We aim to provide the tools necessary to recognize fibromatosis colli by describing three key sonographic appearances. We will present two separate cases that demonstrate these findings and discuss how to sonographically rule out the many differential diagnoses.
Published Version
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