From Q book and ctc Flashcards
Smoothly marginated homgenous Gastric mass
asymp
over 40 y/o
GIST
MC met site for GIST
Liver
Typical CT appearance of carcinoid (and other NET) mets to liver?
Arterial hyper
iso PV and delay
Eovist hepatocyte delay timing?
> 10 minutes (usually 15-20)
Liver regenerative nodules. T2 appearance?
intermediate or dark
HCC and AFP
can be used as a marker, absence does not exclude
MCC HCC mets?
Lung
normal eovist excretion
50% bile
50% renal
panc adeno MC met site
LIver
when is panc duct considered dilated?
> 3mm
What pancreatic adenoCa T stage is considered resectable?
T3 are resectable (beyond pancreas but not involving celiac axis, SMA, SMV or PV)
Panc adeno is bad, usually T4
T3 resectable
Tumor above vs below dentate line
Above = adeno of rectum
below = Ano squamo
Rectal cancer staging
T2
T3
T4
T2 - Mucosa and muscularis (2M’s)
T3 - Broken free - Into perirectal tissues but not adjacent organs or visceral peritoneum
T4 - other organs or visceral peritoneum
High vs low rectal tumors for surgical approach
5cm above anal verge = high rectal tumor
estimated dose to fetus for an abd CT
1st trim
2nd trim
20-30 mGy first
30-45 mGy second