ASCO Review Flashcards
(284 cards)
Anal cancer staging T1 vs T2 and treatment
T1 <2, T2 2-5 cm
Treat T1 with local excision unless high risk features like poorly differentiated
otherwise chemo/rads with 5-FU mitomycin
After definitive treatment recheck with DRE and anoscopy when
if residual disease then
8-12 weeks DRE and anoscopy
if residual disease, salvage surgery with APR (abominoperineal resection) removes anus, rectum and necesitates ostomy
Treatment lines metastatic anal cancer
carbo/taxol preferred first line
Then nivo or pembro
then 5-FU/cis, FOLFOX, DCF
incidentally found gallbladder adenocarcinoma on cholecystectomy, T size at which surgical oncologic staging is needed.
T1b or higher (muscle layer not lamina propria should have
CT CAP to r/o mets
then go back to surgery for hepatic resection, lymph nodes, bile duct excision
treat with adjuvant capecitabine especially if positive nodes
First line treatment for biliary tract malignancies
check for which targetable mutations
other lines
cis/gem + durvalumab (ABC-02 trial showed sig survival benefit in all comers), if immotherapy CI, then still give cis/gem
check for NTRK, MSI-H, RET (selpercatinib), BRAF V600E (dabrafenib/trametinib), FGFR2 fusions or rearrangements (pemigatinib/futibatinib), IDH1 (ivosidenib), HER2 (trastuzumab+pertuzumab_
other chemo
FOLFOX
gem/abraxane
which patient with cholangio is a candidate for liver transplantation as a curative option
unresectable perihilar or hilar cholangio, <3 cm, no mets, no nodes
PSC or other underlying liver disorders are ok
Pemigatinib moa, use and risks
FGFR2 fusion or rearrangement
cholangio and others
GI toxicity, hyperphosphatemia, occular toxicity (must see eye doctor regularly corneal and retinal issues)
Futibatinib moa, use risks
compare to pemigatinib
FGFR2 gene fusion or rearrangement
irreversible FGFR1-4 inhibitor
resistance to acquired resistance mutations to other inhibitors, maybe less occular SE
BRAF mutation in colon ca significance
poor prognosis, they will be KRAS wt
FOLFIRI Bev is an option
encorafenib+cetuximab or panitumumab can be tried after oxali therapy
Adjuvant treatment for colon cancer by stage and other factors
Stage III disease favor FOLFOX/CAPEOX over 5-FU alone
for low risk stage III (<T4, <N2): 3 months of CAPEOX or 3-6 mo FOLFOX (reduced neuropathy)
For high risk group stage III (T4 N1 or N2): 6 months FOLFOX
However, Age >70 (stage II or III), no added benefit of FOLFOX vs 5-FU. 6 mo of 5-FU.
In stage II, survival benefit not demonstrated for FOLFOX over 5-FU
- therefore unless high risk factors present, would do 5-FU alone
Colon cancer oligometastatic disease treatment
resect primary and resect or radiate oligomets, treat with adjuvant FOLFOX for 6 mo
stage II colon cancer (T,N) indications for chemo
T3-4 N0
T3 invades through muscularis (but not into visceral peritoneum or other
adj organs T4)
Adj chemo if:
not MSI-H and
T4
or
T3 with high risk: poorly differentiated, LVI, PNI, bowel obstruction or perforation, <12 LN evaluated, positive margin, tumor budding
anti-EGFR therapy in colon cancer, who gets it
left sided tumors that are KRAS/NRAS/BRAF WT
First line treatment for metastatic colon cancer by molecular markers
FOLFOX bevacizumab
FOLFOX cetuximab for (KRAS/NRAS/BRAF WT and Left)
MSI-H: pembro or dostarlimab or nivo or ipi/nivo
FOLFIRINOX bev if visceral disease and young
subsequent lines of therapy in colon metastatic disease
if progressed on cetuximab regimen switch to bevacizumab regimen
FOLFOX–>FOLFIRI
HER2- Trastuzumab+ pertuzumab/lapatinib/tucatinib or ENHER2
KRASG12C: sotorasib or adagrasib + cetuximab
Lonsurf +/- bev
regorafenib 80 mg start with uptitration to 160 days 1-21
lonsurf MOA and use
trifluridine and tipiracil (thymidine phosphorylase inhibitor which prevents degredation)
2 mo OS benefit
suveillance by stage colon
Stage I–> colonoscopy only
Stage II-III
colo in 1 year
then CEA Q3-6 for 2 years then every 6 for 5 years
CT CAP every 6-12 mo for 5 years
IV oligo mets- CT every 3-6 mo for 2 years then every 6-12 for 5
significance of subserosal tumor deposits in colon cancer staging
upstages to stage III even in the absence of node positivity
pseudomyxoma peritonei
low-grade mucinous carcinoma with diffuse peritoneal involvement
observe vs resect and HIPEC
GEJ tumors are treated like what
esophageal adenocarcinoma
esophageal staging, define T 4a vs T4b and why important
T4a- involves the pericardium, pleura, diaphragm, peritonieum, azygous vein
T4b- involves trachea, great vessels, vertebral body or heart
T4b are unresectable but if not metastatic could be treated with definitive chemo/rads (5-FU and oxaliplatin)
barretts esophagus predisposes to what. Treat with RFA at what level of barretts.
esophageal adenocarcinoma
treat high grade dysplasia with RFA
low grade dysplasia can be treated with PPI/repeat EGDs
esophageal adenocarcinoma localized treatment by stage
difference for esophageal squamous
MSI-H
Tis (high grade dysplasia, T1a= endoscopic resection/ablation
T1b= submucosal invasion
T2= muscularis
T1b- T2 low risk <3 cm well differentiated: surgery
cT2 with high risk (>3 cm mass, LVI, poorly differentiated) or nodes or T3-T4a; preop chemo/rads (carbo/taxol weekly for 5 weeks or FOLFOX 3 cycles every 2 weeks with radiation)
PET before surgery!
cT4b: definitive chemo-rads
PET before surveillance, if persistent, then surgery if possible
Squamous: same as above up for Tis and T1a
cT2N0 high risk, nodes, cT3-4: pre-operative chemo/rads (carbo/taxol) or definitive chemo/rads
cT4b= definitive chemo/rads
MSI-H:
- neoadjuvant or perioperative checkpoint inhibitor therapy
cervical esophageal cancers treatment and definition
<5c from cricopharyngeous muscle should be treated with definitive chemo/rads due to difficulty with surgery in that area