Bilateral Fibromatosis Colli: A Case Report and Review of Literature

Authors

  • Monica Taing McGill University Faculty of Medicine and Health Sciences, Montreal, Quebec, Canada
  • Khalid Alharbi Division of Pediatric Radiology, Montreal Children’s Hospital, McGill University Faculty of Medicine, Montreal, Quebec, Canada
  • Charles Nhan Department of Radiology, Jewish General Hospital, Montreal, Quebec, Canada
  • Pedro Albuquerque Division of Pediatric Radiology, Montreal Children’s Hospital, McGill University Faculty of Medicine, Montreal, Quebec, Canada

Abstract

Fibromatosis colli is a rare benign fibrous tumour of the sternocleidomastoid muscle, affecting 0.4% of infants typically within the first 2-3 weeks of life. Fibromatosis colli is usually unilateral, appears more often on the right side, and affects male patients slightly more than females. Here we present a rare case of bilateral fibromatosis colli in a 5-week-old baby. To the best of our knowledge, there were only 9 cases described in the English literature before our report and review. Bilateral fibromatosis colli has a heterogeneous presentation, and its initial diagnosis can be clinically challenging. As such, we recommend supplementing the history and physical examination with ultrasound to improve diagnostic accuracy. With prompt diagnosis, bilateral fibromatosis colli can be initially managed with physiotherapy, minimising the need for surgical intervention.

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Published

2026-02-28

Issue

Vol. 20 No. 2 (2026)

Section

General Radiology

License

Copyright (c) 2026 Journal of Radiology Case Reports

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