Hypervascular head and neck lesions are findings that enhance avidly after biphasic injection, on contrast-enhanced CT or MRI of the neck.
On this page:
Anatomical variants
-
hyperdense soft tissue mass on non contrast-CT
intense homogeneous enhancement after contrast injection
Vascular malformations
Neoplastic
-
polar vessel sign
on non-contrast imaging, they are less dense than the thyroid parenchyma
hypercalcemia with elevated PTH
-
paragangliomas of the head and neck
-
most common paraganglioma of the head and neck
arise from the carotid body, and splays the carotid bifurcation
-
second most common head and neck paraganglioma
arise from the glomus tympanicum
confined to the middle ear overlying the cochlear promontory
-
arise from the glomus jugulare
irregular and eroded bony margins with a moth-eaten pattern
erosion of the jugular spine
extends into the middle ear
-
arise from the glomus jugulotympanicum
extends between the cochlear promontory and jugular foramen
-
-
lymphadenopathy - lymphoproliferative disorders
Unable to process the form. Check for errors and try again.