Fig. 6
From: Multimodality imaging of paragangliomas of the head and neck

Axial contrast-enhanced CT images of the neck through superior (a) and inferior (b) portions of the carotid bifurcations demonstrate well-defined, avidly enhancing soft tissue masses (white arrows) within the bilateral carotid spaces, which splays the external and internal carotid arteries. Bilateral carotid body paragangliomas are much more common in patient’s living at high altitude