Fibromatosis colli presents in 0.4% of infants as a firm palpable mass in the middle or lower thirds of the sternocleidomastoid muscle.1 The typical age of presentation ranges between two to four weeks of life. It is unilateral in 75% of cases and occurs due to fibrosis within the sternocleidomastoid muscle. Although no single entity has been able to explain the etiology, birth trauma is often attributable. Ultrasonography is the initial investigation of choice. This benign condition is often treated conservatively, rarely requiring surgical intervention. Here are two cases from our centre
Krishnamoorthy, Madhusudhan; Shanmugam, Ram Kumar Sharma; Hitam, Shahrul Bin; Anuar, Khairullah bin; and Abdul Isa, Nur Safira binti
"Fibromatosis colli - an infrequent case of neonatal neck mass,"
Manipal Journal of Medical Sciences: Vol. 2:
2, Article 9.
Available at: https://impressions.manipal.edu/mjms/vol2/iss2/9