10month female with posterior midline neck mass, ultrasound suggests lipoma versus lymphovascular malformation. There is a fairly well-defined avidly enhancing T2 hyperintense mass that contains multiple prominent flow voids within the subcutaneous tissues of the superior right posterior neck. The mass measures up to approximately 4 cm. There is no significant cervical lymphadenopathy. The thyroid and major salivary glands are unremarkable. The imaged portions of the intracranial structures and orbits are also unremarkable. The osseous structures are intact. There is left tympanomastoid fluid signal.
1. Findings suggestive of an infantile hemangioma in the subcutaneous tissues of the superior right posterior neck that measures up to approximately 4 cm.2. Left tympanomastoid fluid may represent effusions, perhaps in the setting of otomastoiditis.