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CTC GI and cancer staging > GI from CTC > Flashcards

GI from CTC Flashcards

1
Q

Esophageal 1-4

A

critical = 3 vs 4

1 vs 2 endoscopic dx

Stage 3 = adventitia

Stage 4 = invasion in to adjacent structures

4a resectable (pleura, pericardium diphragm)

4b NOT (trachea, aorta)

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2
Q

esoph candida

early vs late

old person mimic

A

MC = discrete plaque like lesions

later shaggy

older person mimic with multiple elevated nodules = glycogenic acanthosis

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3
Q

esoph ulcers

herp vs HIV/CMV

A

herp small and multiple with halo

HIV/CMV large and flat

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4
Q

MC sites for dup cysts

A

1 ileum

2 gus

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5
Q

scleroderma small bowel

A

hidebound, stack of coins, narrowly separated valvulae conniventes

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6
Q

achalasia cancer risk type

A

squam

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7
Q

ZE ulcers MC spot

A

bulb

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8
Q

Gardner syndrome

A

(FAP)

multiple osteomas especially of the mandible, skull and long bones

desmoid tumours of mesentery and anterior abdominal wall

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9
Q

Cowden’s

A

HAMARTOMAS

Breast cancer

Lhermitte Duclos

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10
Q

GIST

where and who

A

70% stomach

over 40y

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11
Q

benign ulcer features

A

deeper than wide

lesser curvature

folds radiate to ulcer

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12
Q

gastric vs duodenal ulcers

A

duey

never cancer

“increased peptic acid”

solitary

stomach

“altered mucosal resistance”

5% cancer, 2/2 h pylori

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13
Q

MC extranodal site for NON hodgkin lymphoma

A

Stomach

vs primary stomach lymphoma, MALT

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14
Q

Linitus plastica primary and mets

A

Primary = scirrhous adenocarcinoma

or breast or lung mets

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15
Q

ram’s horn ddx

A

ulcer scarring

Granulomatous

Crohns

Sarcoid

Scirrhous Cancer

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16
Q

“Isolated gastric varices”

A

Splenic vein thrombosis

(panc cancer or itis —> splenic thrombus —> isolated gastric varices)

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17
Q

area gastricea enlarged by?

obliterated by?

A

elarged in elderly and H pylori, enlarges next to an ulcer

obliterated cancer or atrophic gastritis

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18
Q

fold density jej vs il

A

jejunum more packed (4-7 per inch)

2-4 per inch in ileum

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19
Q

contrast % weight by vol

CT

smal bowel

double barium

A

CT = 2% wt/vol

Small bowel = 20-30% wt/vol

double barium = 98% wt/vol

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20
Q

Whipples

A

strippers - old men in 50’s

thickened folds and nodules

Duoy and Jej

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21
Q

MC small bowel adeno

A

duoy

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22
Q

which side

epiploic append

omental infarct

A

ROI

RIGHT = omental infarct

Epiploic appendagitis on LEFT

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23
Q

appendix mucocele

A

MC mucinous tumor of the appendix

gets big, looks like cystadenoma

rupture = pseudomyxoma peritoneii

“onion sign”

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24
Q

toxic megacolon causes and must

A

UC, Crohns (less) and Cdiff

NO haustra

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25
Q

rectal phleboliths

A

rectal cavernous hemangioma

klippel trenaunay weber

Blue Rubber Bleb

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26
Q

entamoeba histolytica site

A

cecum and ascending colon MC

“coned cecum”

spares TI

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27
Q

colonic TB

A

INVOLVES TI

also coned cecum

ulcers and areas of narrowing

28
Q

pseudomyxoma peritoneii causes

A

ruptured mucocele MC = appendix

mucinous neoplasm (ovary, colon, appendix and panc)

leads to obstructions

29
Q

cause of atrophy hypertrophy in cirrhosis

A

Right portal vein takes a longer course

30
Q

placenta circulation

A

PULI

PUDI

splits. placenta umb LIVER IVC

placenta umb DUCTUS IVC

31
Q

regenerative vs dysplastic vs hcc

A

regen T1 and T2 dark

dysplastic T1 bright

HCC T2 bright and enhancing

32
Q

Liver window

A

Center = 100

Width = 200

33
Q

OWR liver

A

cirrhosis with massively enlarged hepatic artery

34
Q

Single liver abscess =

multiple =

A

single = kleb

multiple = e coli

35
Q

ddx for CT enhancement patterns

washout -

iso -

persist-

A

washout = HCC, mets, adenoma, abscess

iso = FNH

persists = hemangioma

36
Q

FNH trivia

scar looks like

nucs study

A

Scar has delayed enhancement (fibrolamellar HCC doesn’t)

Sulfur colloid

FNH is MRI stealth, T1 and T2 iso

37
Q

Hepatic adenoma on MRI feature

A

microscopic fat

drop out on out of phase (out of phase has india ink)

38
Q

Fibrolamellar scar and nucs stuff

A

T2 dark scar that doesn’t enhance

HOT ON GALLIUM

39
Q

MRI liver phase timing

CT

A

arterial = 30 seconds

PV = 70 seconds

hep vein = 90 sec - 5 mins

CT

30sec

80 sec

3-5 minutes

40
Q

Cholangio T4 =?

A

main vein/artery

secondary biliary radicles

lead to desmo reaction and delayed enhancement

41
Q

hepatic angiosarc a/w?

A

toxic exposure - arsenic, PVC, radiation, thorotrast

multifocal, bleeds

42
Q

cystic liver lesion in middle aged female

A

biliary cystadenoma

can’t distinguish from carcinoma

43
Q

calcified liver mets

A

colon, ovary, pancreatic (mucinous tumors)

44
Q

Gallium hot liver thing

A

HCC or abscess

45
Q

T1/T2 bright liver thing, gross fat on CT

A

liver AML (TS)

46
Q

Budd chiari look

A

large regenerative nodules in a dysmorphic liver (huge caudate)

acute flip flop with high attenuation peripherally

47
Q

massive caudate ddx

A

Budd

PSC

PBC

48
Q

pseudocirrhosis

A

treated breast (or colon) mets can mimic with retraction and caudate enlargement

49
Q

liver transplant US

normal HA velocity

A

<200

50
Q

bil dil rare in all types of cirrhosis except?

A

PSC

51
Q

multifocal strictures/ PSC mimic in HIV

A

AIDS cholangiopathy

CRYPTO

52
Q

left dominant, recurrent dilated ducts full of stones

A

Oriental/recurrent pyogenic cholangitis

53
Q

Caroli’s a/w

A

PcKD

medullary sponge

54
Q

% with synchronous polyps

(ie chance someone with an adenomatous polyp cut out has another one)

A

30-50%

55
Q

normal PV vel

A

20-40 cm/s

56
Q

complication of enzyme replacement therapy in CF

A

fibrosing colonopathy

wall thickening of proximal colon

57
Q

young pancreatitis with dilated, stone filled duct

A

hereditary or tropical

increased adenoCa risk

58
Q

IPMN a/w malig = ?

A

MAIN BRANCH

all considered malignant and should be resected

diffuse dilatation, calcs, atrophy (mimics chronic itis)

59
Q

SPEN b9 or malig?

A

low grade malignant tumor

thick capsule

may have progressive fill in

60
Q

unresectable panc cancer = ?

A

involvement of SMA/celiac axis

GDA comes out anyway

61
Q

Panc NET

MC overall

MC with MEN

Highest malig potential

A

MC overall = insulinoma

MC with MEN = Gastrinoma

Highest malig potential = glucagonoma

nonfunctional = big, malignant, metastatic

62
Q

T2 dark things in spleen

A

GG bodies, foci of hemorrhage

a/w portal HTN

63
Q

MC GI sites for sarcoid

A

antrum MC in GI tract

spleen in 50-80% (usually just big)

64
Q

splenic aneurysms

who gets more

when to treat

A

preggos

2-3 cm

65
Q

classic bug and setting for splenic abscess

A

salmonella

CTC GI and cancer staging (2 decks)

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