Paragonglioma

Question 1

paragangliomas

Answer 1

glomus tumors from sympathetic glomus bodies

identical to extra-adrenal pheochroocytoma

5 in the head/neck

associated with MEN 1 and NF1

Question 2

paraganglioma imaging pattern

Answer 2

salt and pepper on MRI due to tumor flow voids

highly vascular and enhance vividly

Question 3

5 glomus tumors of head/neck

Answer 3

glomus jugulare, glomus tympanicum, glomus jugulotympanicum, carotid body tumor, glomus vagale,

Question 4

most common neoplasm of jugular foramen

Answer 4

glomus jugulare

Question 5

glomus jugulare

Answer 5

moth-eaten bony destruction centered around jugular foramen (schwannoma will have smooth bony remodeling; meningioma will cause hyperostosis)

middle aged women with pulsatile tinnitis and conductive hearing loss

Question 6

middle ear paraganglioma

Answer 6

glomus tympanicum

Question 7

glomus tympanicum

Answer 7

vascular red, retrotympanic mass in the middle ear

Question 8

ddx red retrotympanic mass

Answer 8

glomus tympanicum, aberrant carotid artery, tympanic membrane hemangioma

Question 9

glomus jugulotympanicum

Answer 9

glomus jugulare that has spread into the middle ear

Question 10

carotid body tumor/glomus caroticum

Answer 10

paraganglioma of carotid body

splays ICA and ECA

Question 11

glomus vagale

Answer 11

paraganglioma of vagus nerve, at same level as carotid body tumor

displaces carotid artery medially/anteriorly

mimic: schwannoma of vagus nerve, but is less vascular