Health AI Central
Peer-Reviewed Publication
Cureus2026;18(8):e115519.August 1, 2026Case Reports

Fibromatosis Colli Presenting as a Left-Sided Cervical Mass: A Case Report.

Daniel Jennings1, Courtney Shockley2
1Pediatrics, Pacific Northwest University of Health Sciences, Yakima, USA.
2Pediatrics, Nourish Wellness, Yakima, USA.
PubMed PMC DOI PDF

Abstract

Fibromatosis colli is a rare, benign condition of infancy characterized by fibrous enlargement of the sternocleidomastoid (SCM) muscle. It typically presents during the first several weeks of life as a painless cervical mass and may be associated with congenital muscular torticollis (CMT). Ultrasonography is the preferred initial imaging modality; however, variable sonographic appearances may comp…

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