Pancreatic cancer Flashcards
breakdown of pancreatic cancer anatomy/location
2/3’s of tumors are located in head of pancreas
RF’s for pancreatic cancer
1) smoking
2) DM2
3) chronic pancreatitis
4) genetic RF’s (peutz-jeghers, lynch, BRCA, ATM)
clinical significance of pancreatic intraepithelial neoplasia
precursor lesion to ductal adenocarcinoma
presentation of pancreatic cancer
IF head –> jaundice + pain
IF body/tail –> asymptomatic
New onset or worsening diabetes, thrombophlebitis, pancreatitis
histological subtypes of pancreatic cancer
- most are adenocarcinoma, neuroendocrine also but much less common
tumor marker for pancreatic cancer
CA 19-9
features precluding resection of pancreatic cancer
distant mets
SMA involvement
hepatic or celiac artery involvment
portal vein occlusion
surgery type used for resection of tumor in pancreatic head
whipple procedure
how whipple procedure works
removal of pancreatic head along with distal stomach, gallbladder, cystic and common bile ducts, duodenum, and proximal jejunum
typical adjuvant chemo
5-FU or gemcitabine or FOLFIRINOX
pancreatic cancer associated with which BRCA type
Type 2
Stage of presentation of most pancreatic cancer
Majority of patients have unresectable or metastatic disease at diagnosis
location of most tumors at presentation
(2/3’s in head)
Histologic subtypes of pancreatic cancer
- most are adenocarcinomas
- neuroendocrine tumors (much less common)
Features of unresectable pancreatic cancer
Distant mets
Superior mesenteric or portal vein encasement or occlusion
SMA involvement
hepatic artery or celiac artery involvement
Targeted therapies for pancreatic cancer
PARP inhibitors for BRCA (though very low prevalence around 5%)
management of surgically resectable pancreatic cancer
Trend CA19-9
Surgery, then adjuvant chemo +/- radiation
management of non-surgically resectable pancreatic cancer
Trend CA19-9
Palliative chemotherapy
Palliative care consult
typical palliative chemo regimen
FOLFIRINOX OR gemcitabine + nab-paclitaxel
Role for MRI in pancreatic cancer workup
indeterminate lesions on CT abdomen
Preferred NAC regimens
Modified FOLFIRINOX OR gemcitabine + nab-paclitaxel
What is modified folfirinox?
No 5-Fu bolus
Surgery type for tumor in pancreatic body and tail
Distal pancreatectomy with en bloc splenectomy
Management of patient with hyperbilirubinemia/jaundice from obstruction
Consult GI for endoscopic stenting
Which BRCA type is associated with pancreatic cancer
BRCA2
Other hereditary syndromes associated with pancreatic cancer
ATM, lynch, peutz-jeugers
Precursor condition
pancreatic intraepithelial neoplasia
Workup imaging modality
pancreatic protocol CT (need to repeat if just CT-abdomen, surgeons need it)
Role for chemoRT?
- ???
metastatic disease management for patients with poor performance status
Single agent gemcitabine
GEM-ABRAXANE is
Gemcitabine
Albumin bound paclitaxel
In what circumstance may CA19-9 be falsely negative?
patients who lack Lewis antigen (also bad prognosticator)
Role for immunotherapy in advanced pancreatic cancer
- pembrolizumab is second line for MSI-H or dMMR tumors
Preferred Adjuvant regimens
- gem/capecitabine
- **gem/abraxane not listed
- mFOLFIRINOX
Pathophysiology of non-secretory pancreatic cancer
Lacking Lewis antigen (protein found on red cells)
T4 disease in pancreatic cancer
- involvement of the celiac axis, SMA, or common hepatic artery REGARDLESS of size (this are unresectable areas)
Vascular structures that if involved preclude surgery
celiac axis, SMA, or common hepatic artery
Metastatic pancreatic cancer systemic regimens
1) Gemcitabine
2) gem + erlotinib
3) FOLFIRINOX
4) Gem + abraxane
What is the modified Appleby procedure?
Removes two-thirds of pancreas, spleen, and celiac axis
Clinical significance of BRCA mutation in metastatic setting
1) gemcitabine + cisplatin first line (confers platinum sensitivity)
2) PARP inhibitors can be used as maintenance therapy
Clinical significance of PALB2 mutation in metastatic setting
Same as BRCA (another DNA repair mutation)
Second line options
1) Given previous treatment with gemcitabine-based therapy, 5-Fu + leucovorin + liposomal irinotecan (NAPOLI 1 Study, OS of 6.1 months)
2) Given dMMR or MSI-H, pembrolizumab
Preferred adjuvant regimens
1) mFOLFIRINOX
2) Gemcitabine + capecitabine
* Gem/abraxane not listed
Pathophys of IPMN?
- cystic neoplasm of the pancreas with malignant potential
what is tested for in germline testing?
- DNA repair genes – BRCA 1/2, PALB2, ATM, STK11
Surgical procedure for pancreatic cancers of the head and uncinate process
- pancreatoduodenectomy (Whipple procedure)
Surgical procedure for pancreatic cancers of the body and tail
- distal pancreatectomy with en-bloc splenectomy
Actionable somatic mutations in pancreatic cancer
- ALK
- NTRK
- ROS1
- KRAS
Drugs approved for NTRK gene fusions in pancreatic cancer
Larotrectinib or entrectinib
Role for chemoRT
1) Adjuvant setting for R1 resection
Adjuvant Category 1 recommendations for no prior NAC
Gemcitabine/capecitabine
mFOLFIRINOX
*gem/abraxane not studied
PARP maintenance trial in pancreatic - OS or PFS benefit?
PFS, no OS
Most common germline mutation in hereditary pancreatitis
PRSS1
Germline genetic testing indication in pancreatic
All patients