1. Valentino, Katie DNP, APRN, FNP-BC
  2. Tothy, Alison S. MD


Fibromatosis colli is a rare, usually self-limiting condition caused by a benign tumor in the sternocleidomastoid muscle. The tumor occurs most often during infancy and can be clinically associated with torticollis. Accurate diagnosis of fibromatosis colli is important to avoid unnecessary invasive interventions. Radiographic imaging is fundamental to differentiating this benign tumor from other causes of neck masses/swelling in infants. In this article, we discuss the case of a 4-month old child who presented with a head tilt and had imaging that favored a diagnosis of fibromatosis colli.