GI Flashcards
Give an example of a VEGF inhibitor
Bevacizumab
Give an example of a EGFR inhibitor
Cetuximab
What tumour marker do we look for in HCC?
AFP
CA19-9 is a tumour marker for…
Pancreatic
Gallbladder
Bile duct
Gastric
What is the tumour marker for colorectal?
CEA
What are the upper GI red flags?
Dysphagia Abdominal or back pain with weight loss Haematemesis Jaundice Abdominal mass
What are the lower GI red flags?
Changes in bowel habit
Rectal bleeding
Anaemia
Perianal pain
Describe Dukes staging
A confined to bowel wall
B through the muscularis propria
C lymph node involvement
D metastasised
What factors increase the risk of colorectal cancer?
Diet: red meat, alcohol and high calories
Smoking, obesity
IBDs
Genetics - HNPCC, FAP, Lynch
FAP is linked to mutations in which gene?
APC tumour suppressor gene
70% of all colorectal cancers are what type?
Adenocarcinomas
How does a right sided bowel cancer present?
Palpable mass in RIF Diarrhoea Weight loss Anaemia Occult GI bleeding - Melaena
How does a left sided bowel cancer present?
Palpable mass LIF change to bowel habit Tenesmus PR bleeding Bowel obstruction
What investigations would you order for suspected bowel cancer?
DRE FBC, U+E, LFTs, bone profile CEA Colonoscopy CT CAP
What is the percentage 5 year survival for each Dukes staging?
A 93
B 77
C 48
D 7
How is bowel screening done?
Everyone over 50 years sent a faecal occult blood kit every 2 years
One off flexible sigmoidoscopy between 55-59 years
What percentage of gallbladder polyps are benign?
95
When do we need to worry about gallbladder polyps?
> 1cm likely to be or become malignant
>1.8cm significant risk