Ultrasound and MR imaging of fibromatosis colli (sternomastoid tumor of infancy)

Deborah S. Ablin, Kiran A Jain, Lydia P Howell, Daniel C. West

Research output: Contribution to journalArticlepeer-review

49 Scopus citations


The sonographic and CT findings of fibromatosis colli (sternomastoid tumor of infancy) have been described, but the MRI appearance has been reported in only one case in which the mass resolved over time. This case describes the detailed MRI findings in a biopsy proven case of fibromatosis colli; the signal intensity of the mass on T2-weighted images was slightly less than on gradient-recalled T1-weighted images, consistent with the presence of some fibrous tissue within the muscle mass. The involved portion of the muscle was better defined on MRI than sonography. MRI was helpful in demonstrating the signal characteristics of the mass; localizing the mass to within the sternocleidomastoid muscle; and demonstrating clear surrounding fascial planes with lack of associated lymphadenopathy, airway compression, vascular encasement, bone involvement or intracranial/intraspinal extension associated with other neck masses.

Original languageEnglish (US)
Pages (from-to)230-233
Number of pages4
JournalPediatric Radiology
Issue number4
StatePublished - Apr 1998

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Pediatrics, Perinatology, and Child Health
  • Radiological and Ultrasound Technology


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