ENT Radiology Flashcards
when would a plain XR be used in ENT
suspected FB inhalation/ingestion
1st line investigation for dysphagia?
endoscopy
2nd line investigation for dysphagia?
Ba swallow
1st line investigation of a suspected pharyngeal pouch?
ba swallow
cause of pharyngeal pouch?
weakness in pharyngeal wall
when is USS used in ENT?
neck lumps
salivary gland disease
inflammatory msses eg abscess
1st line investigation of lymph nodes?
USS
why is USS good for children?
cheap and uninvasive
main Ix of neck lumps?
USS
FNA
what do benign lymph nodes look like?
have a central fatty hilum
rugby ball shaped
what does a colloid cyst look like on imaging?
round
uniform consistency
what does a papillary thyroid carcinoma look like on imaging
calcifications
not uniform
when would CT/MRI be used in the ear?
look at temporal bone for:
cholesteatoma
trauma
when would CT/MRI be used in throat/neck?
investigate infection, trauma, masses
look at causes for a vestibulocochlear palsy
when would CT/MRI be used in the nose?
paranasal sinuses for surgery
tumours
standard Ix for head and neck cancer?
CT neck and chest
1st line imaging for brain involvement in ENT?
MRI
what imaging is best for looking at the larynx?
CT
why is CT done more often in elderly patients?
scan time is much shorter
what colour do the extraocular muscles look like on MRI
white
how is sinus surgery performed?
functional endoscopic sinus surgery (FESS)
what imaging is used to investigate sensorineural deafness?
MRI
what imaging is used to investigate conductive deafness?
CT
what tumour can cause sensorineural deafness?
vestibular schwannoma
what tumour can cause conductive deafness?
cholesteatoma
