Introduction: Fibromatosis colli is an uncommon congenital infantile tumour occurring in 0.4–1.3% of live births. They are non-malignant, however early detection and treatment are crucial. This is because, if left untreated, fibromatosis colli tumours can cause permanent disfigurements to the skull and spine of the infant. The main aetiology that causes congenital fibromatosis colli is believed to be muscle injury, either intrauterine or during childbirth. A common symptom of congenital fibromatosis colli is head tilting toward the affected side. Case report: This case report discusses the management of an 82-day-old infant with fibromatosis colli. Discussion: Clinical examination including palpation and examination of the range of movement of the sternocleidomastoid muscle is the key to diagnosing fibromatosis colli. Early physiotherapy represents the first-line treatment in affected infants.

fibromatosis colli, torticollis, congenital infantile tumour, sternocleidomastoid muscle