The imaging characteristics are compatible with carotid body tumor (Paraganglioma).

The possible differential is vagal schwannoma, but that would spread internal and external jugular veins and push the internal carotid artery anteromedially.

The other differential is jugular paraganglioma, but it would be located more rostrally.

This case is contributed by Dr. Naqibullah Foladi and Dr. M.M.S. Hoshang.