Presentation
Infant with lump in the neck.
Patient Data
Age: 2 months
Gender: Male
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Fusiform focal thickening of sternocleidomastoid muscle, maintaining the fibrillar structure.
Case Discussion
Fibromatosis colli is a rare form of infantile fibromatosis that occurs within the sternocleidomastoid muscle. It is a benign cause for a 'lump' in the neck in the newborn and infant. It is classically associated with a traumatic or assisted delivery.
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