Left sided neck mass below mandible along SCM. US showed solid heterogenous mass. There is diffuse swelling and patchy T2 hyperintensity and enhancement of the left sternocleidomastoid muscle. There is no evidence of significant cervical lymphadenopathy. The thyroid and major salivary glands are unremarkable. The osseous structures are unremarkable. The imaged intracranial structures and orbits are unremarkable.
Findings suggestive of left fibromatosis colli.