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neuro > CtC pearls > Flashcards

CtC pearls Flashcards

1
Q

West Nile classic look

A

T2 bright BG with corresponding restricted diffusion

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2
Q

CJD classix

A

Gyriform peripheral restricted diffusion

Restricted diffusion in dorsal medial thalamus (hockey stick)

Rapidly progressing atrophy

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3
Q

neurocysticercosis stages

A

Vesicular - thin walled, no edema

Colloidal - hyperdense cyst with lots of edema

Granular - shrinking, less edema

Nodular - small, calcified, no edema

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4
Q

ganglioglioma classic look

A

cystic and solid with focal calcs (enhances)

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5
Q

Gorlin

A

medullos

thick dural calcs

odontogenic cysts

basal cell ca after radiation

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6
Q

Central neurocytoma classic look

A

MC IV mass in adults 20-40

swiss cheese - numerous cystic spaces on T2

Calcify, a lot

cystic non-enhancing intraventricular mass in a grown up

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7
Q

CPP

a/w syndrome

A

trigone (only seen in kids)

Li Fraumeni (p53)

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8
Q

DIG

A

< 1 yo

large cyst, superficial cortex

“rapidly increasing head circumference”

solid components enhance avidly

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9
Q

microadenoma adeno vs neurohypophysis

A

2/3 in adeno

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10
Q

Germinomas boys vs girls

A

germinomas

boys pineal

girls suprasellar

heterogenous T1/T2, fat and calcs, heterogenous enhancement

GERMINOMA CENTRAL CALCS

BLASTOMA AND CYTOMA EXPLODED CALCS

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11
Q

mucocele look

A

T1 bright with thin enhancing rim

(Frontal MC)

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12
Q

stroke enhancement timing

A

starts in 3 days

peaks at 3 weeks

gone by 3 months

RD 30 mins to 2 weeks

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13
Q

capillary telangiectasia

A

usually pons

usually 2/2 RT

slow flow

don’t bleed

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14
Q

MC systemic itis to hit CNS

A

PAN

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15
Q

MC collagen vasc dz to hit CNS

A

SLE

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16
Q

Moya a/w’s

A

Sickle

Downs

XRT

NF

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17
Q

MR Spect randomness

Lactate Lipid

lactate when

Myoinositol

Alanine

Glutamine

High grade tumor

Low grade tumor

Radiation necrosis

A

Lactate Lipid - double peak

Myoinositol - Alzheimers and low grade glioma

Alanine - Mening

Glutamine - hepatic encephalopathy

High grade tumor - high chol/NAA, lactate/lipids up

Low grade tumor - choline and NAA down

Radiation necrosis - choline and NAA down, lactate up

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18
Q

gradenigo triad

A

Otomastoiditis

Tic

VI

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19
Q

endolymphatic sac tumor

a/w

look

A

VHL

amorphous calcs on CT

T2 bright with intense enhancement

vascular with flow voids and blush on angio

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20
Q

retro fenestral

A

more severe

demineralization around cochlea

component of sensory hearing loss

almost always bilateral and symmetric

21
Q

cholesteatoma path of destruction

A

scutum

ossicles (long process of incus)

lateral segment of ss canal

22
Q

Big maxillary ostium

A

antrochoanal polyp

23
Q

inverted papilloma

A

similar looking to antrochoanal with enhancement

10% hide SCC

cerebriform appearance

24
Q

esthesio nucs positive?

A

octreotide

25
Q

nosebleed culprit

A

sphenopalatine

26
Q

MC sialolithiasis

A

submandibular (wharton)

27
Q

odontogenic keratocyst

look

a/w

A

Body/ramus

no cortical expansion

likely shown multilocular

Gorlin syndrome

28
Q

aggressive looking jaw lesion

A

ameloblastoma/adamantinoma of the jaw

solid component

tend to arise from dentigenous cysts

DOES expand

soap bubbles

extensive tooth resorption

29
Q

odontoma

A

tooth hamartoma

starts out lucent, will be shown solid

MC odontogenic tumor of mandible

30
Q

MC malig tumor of minor salivary glands

A

mucoepidermoid carcinoma

variable appearance

31
Q

Warthins

A

like parotid tail

a/w smoking

well defined with cystic changes and mural nodule

takes up pertechnetate on NUCS

32
Q

adenoid cystic salivary

A

malignant, favors small salivary glands (all the malignant ones do)

PERINEURAL SPREAD, INVASIVE VII

33
Q

parotid lymphoma

A

bilateral = Sjogrens

sjogrens = 1000x the risk (MALT lymphoma)

34
Q

best laryngeal SCC outcome?

A

glottic

35
Q

T3 laryngeal SCC = ?

A

fixation of chords

paraglottic space involvement, “transglottic”, seen on coronal

36
Q

Small eye with dense vitreous

A

Persistent hyperplastic primary vitreous

failure of embryonic ocular blood supply to regress

37
Q

Coat’s dz

what is?

vs Rb?

A

Retinal telangiectasis, leaky blood and subretinal exudate

Unilateral small eye, not calcified

Rb normal sized and calcified

38
Q

Weird breast cancer met to eye feature?

A

enopthalmos

39
Q

MC intra-ocular lesion in an adult and next step?

A

orbital melanoma

Liver MR (mets there)

40
Q

orbital septum origin and insertion

A

originates from periosteum of the orbit, inserts in the palpebral tissue along the tarsal plate

41
Q

Modic 1 2 3

A

1 = edema T2 bright

2 = fat both bright

3 = scar both dark

42
Q

plavix myelogram

A

7 days

coumadin 4-5

ASA ok

LMW hep x 12 hours

heparin 2-4 hours

43
Q

time for abnormal nerveroot enhancement

A

after 6 weeks = arachnoiditis

44
Q

transvers lig

A

straps dens to anterior C1 arch

arch to dens should be <5mm

45
Q

spinal avm/avf types 1-4

A

1 MC, dural AVF, single coiled vessel

2 has an intramedullary nidus, bleeds

3 juvenile, bad

4 near the conus, perimedullary

46
Q

rugger jersey or picture frame that’s T1 and T2 dark on MR?

A

Ostepetrosis

47
Q

TM look

A

long segment

both sides of cord

expanded and swollen

can enhance

MS is short seg, non expanding, focal

48
Q

NF vs schwannoma

A

NF has T2 dark center, target

schwannoma may have cyst or hemorrhage

49
Q
A

neuro (1 decks)

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