IMAGINGFibromatosis Colli A Case ReportValentino, Katie DNP, APRN, FNP-BC; Tothy, Alison S. MDSection Editor(s): Ramponi, Denise R. DNP, FNP-C, ENP-BC, FAEN, FAANP, CEN; Column Editor Author Information University of Chicago Medicine Comer Children's Hospital, Illinois. Corresponding Author: Katie Valentino, DNP, APRN, FNP-BC, University of Chicago Medicine and Biological Sciences, 5841 S. Maryland Ave, MC 0810, Chicago, IL 60637 (firstname.lastname@example.org). Disclosure: The authors report no conflicts of interest. Advanced Emergency Nursing Journal: January/March 2020 - Volume 42 - Issue 1 - p 13-16 doi: 10.1097/TME.0000000000000285 Buy Metrics Abstract 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. Copyright © Wolters Kluwer Health, Inc. All rights reserved.