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Revise Radiology Qs Notes > Revise Radiology H&N > Flashcards

Revise Radiology H&N Flashcards

1
Q

Slow growing, sclerotic lesions attached to outer table of skull

A

Osteoma

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2
Q

Commonest complication of acute mastoiditis

A

Sigmoid sinus thrombosis

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3
Q

Hyperattenuating mass conforming to shape of orbit without deforming it

A

Orbital lymphoma

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4
Q

Bunch of grapes overlying skull

A

Skull vault haemangioma

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5
Q

Sarcoid orbital disease distribution

A

Extraconal

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6
Q

Intensely enhancing tumour with calcifications near petrous bone

A

Endolymphatic sac tumour

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7
Q

Cholesteatoma MRI

A

Iso T1, Iso T2, no enhancement, restricted diffusion
Pars flaccida cholesteatomas are T2 bright

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8
Q

Expansile, unilocular lesion with sclerotic rim in posterior mandible

A

Odontogenic keratocyst

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9
Q

Infiltrative, intermediate T1 and T2 lesion in maxilla, CML

A

Granulocytic sarcoma

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10
Q

Subdural spinal bleed

A

Much rarer than epidural, inverted mercedes benz on axial imaging

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11
Q

Ix to evaluate extent of disease in paillary thryroid cancer

A

I-123 whole body scan

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12
Q

Glomus jugulare location

A

Hypotympanum

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13
Q

Depressed blood flow and metabolism affecting the cerebellar hemisphere after a contralateral supratentorial insult

A

Crossed cerebellar diaschisis

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14
Q

Dentigerous cyst underlying pathology

A

Developmental anomily during enamel formation

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15
Q

Skull vault haemangioma histology

A

Hamartoma with fat, smooth muscle, fibrous tissue and endothelium

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16
Q

Branchial cleft cyst types

A

Type 1: external auditory canal to angle of mandible
Type 2: Near angle of mandible, anterior and medial to SCM
Type 3: Deep to SCM or posterior
Type 4: Near larynx or thyroid

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17
Q

Acquired vs congenital cholesteatoma

A

Cochlear promontory is first involved in congenital, spared in acquired

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18
Q

Acoustic neuroma vs meningioma

A

Meningioma has dural tail, neuroma centered on internal audiory canl

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19
Q

Pars flaccida cholesteatoma commonest eroded bone

A

Long handle of incus

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20
Q

Optic nerve glioma MRI

A

Enlarged optic nerve with T1 hypo and t2 hyperintensity

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21
Q

High T2 in cystic areas and enhancing mural nodule

A

Ameloblastoma

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22
Q

Well circumscribed lesion surrounding an unerupted tooth

A

Dentigerous cyst

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23
Q

Facial nerve injury caused by

A

Transverse fracture of temporal bone

24
Q

New cystic level 2 mass in older person

A

SCC until proven otherwise (Head and neck)

25
Q

Hard, painless thyroid mass

A

Reidel’s thyroiditis

26
Q

Lateral semicircular canal erosion causes

A

Labyrinthine fistula

27
Q

Heterogenous giraffe skin appearance of thyroid on US

A

Hashimotos

28
Q

Atlas fracture classification

A

Gehweiler:
Type 1: Anterior arch
Type 2: Posterior arch, usually bilateral
Type 3: Anterior and posterior arch (Jefferson burst fracture)
- 3a: Intact transverse atlntal ligament
- 3b: disrupted transverse atlantal ligament
Type 4: Lateral mass
Type 5: Isolated C1 transverse process fracture

29
Q

Warfarin, intraspinal haemorrhage, Rx

A

Vitamin K, then surgery

30
Q

Recurrent odontogenic keratocysts

A

Multilocular lesion with thin enhancing rim

31
Q

Hangman fracture

A

C2 pars interarticularis fracture, classified by Levine and Edwards

32
Q

Subglottic tumours likely to spread to (node level)

A

Level 3 nodes

33
Q

Flexion teardrop on CT, next step

A

Immediate surgical intervention

34
Q

Attachments of the tympanic membrane

A

Scutum (superior) and tympanic annulus (inferior)

35
Q

Dentigerous cyst Rx

A

Enucleation

36
Q

Air in cochlear or vestivule

A

Perilymphatic fistula

37
Q

Cerebral amyloid angiopathy

A

Multiple peripheral haemorrhagic foci in normotensive pt

38
Q

Metastatic papillary thyroid Ca on US and FNA

A

Surgery and then look for distant mets

39
Q

Paget Schroetter syndrome

A

Compression and thrombosis of subclavian vein as it enters the thorax, seen in young sporty ppl

40
Q

Peripheral vascularity in lymph node

A

Suggests malignant

41
Q

Normal optic nerve diameter

A

optic nerve 2mm
CSF thickness 1.5mm

42
Q

Expansile skull vault lesion with sunburst pattern

A

Skull vault haemangioma

43
Q

Hypointense filling of sinuses on T1 and T2

A

Fungal sinusitis

44
Q

Corpus callosum normal myelination

A

Splenium 3-4 months, genu 6 months

45
Q

Carotid body tumours associated with

46
Q

commonest cause of pulsatile tinnitus

A

Glomus jugulare tumour

47
Q

Tell demarcated mixed lytic and sclerotic lesions, common in jaw

A

Ossifying fibroma

48
Q

Trigeminal neuralgia underlying pathology

A

Neurovascular compression at root entry zone of trigeminal nerve

49
Q

Septum pellucidum lesion, iso T1 and T2, enhances with gadolinium

A

Central neurocytoma

50
Q

Large sella and hypertelorism

A

Hypothyroidism

51
Q

Orbital cavernous malformation aka

A

Orbital haemangioma

52
Q

Silent sinus syndrome

A

Progressive facial symmetry with unilateral enophthalmos.
Complete opacification and volume loss of affected sinus

53
Q

Swollen external auditory canal with bony destruction, diabetic

A

Necrotizing otitis media

54
Q

Hangman fracture, no neuro deficit, Rx

A

Hard cervical collar

55
Q

OMU consists of

A

Hiatus semilunaris,
Ethmoid bulla
Uncinate process
Maxillary infundibulum

56
Q

Incidental FDG avid thyroid nodule

A

40% chance f malignancy

Revise Radiology Qs Notes (60 decks)

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