Paraganglioma AKA carotid body tumor AKA glomus tumor - uncommon neuroendocrine tumor in ages 30-50. Carotid body about half the time.
On CT avid enhancement with contrast. Can have permeative bone erosion.
On MRI T1 hypointense to liver. May have "salt and pepper" appearance. T2 hyperintense. T1C heterogenous and vivid with prolonged enhancement.