Where is colon cancer
In the large intestine
What cancer is the 2nd leading cause of cancer deaths and the 3rd most common form of cancer
Colorectal cancer
What are the majority of causes of Colorectal cancer
DNA mutations are more common (inheriting the cancer is less common)
What are risk factors for Colorectal cancer (a lot)
What is the most common type of Colorectal cancer and what causes it
Adenocarcinoma caused by adenomatous polyps
Where are the most common sites of metastasis for adenocarcinoma 5
What are some common clinical manifestations of Colorectal cancer 6
If Colorectal cancer is in the ascending colon, what might be some symptoms 4
If Colorectal cancer is in the Transverse colon, what might be some symptoms 4
If Colorectal cancer is in the descending colon, what might be some symptoms
If Colorectal cancer is in the rectum, what might be some symptoms 3
What ages should you be screened for colorectal cancer
45-75.
75-85 decide between you and your doctor if you need the screenings.
85 and older, no screenings.
What types of screenings might they do
Who are going to need earlier screenings for colorectal cancer before the age of 45 2
How can we diagnosis colorectal cancer
Perform a diagnostic colonoscopy and obtain a tissue biopsy during the colonoscopy (may also remove a polyp during the colonoscopy).
What illness do we often find with colorectal cancer? Why?
Anemia, because they usually have bleeding in their colon. (check CBC)
When evaluating a patient with colorectal cancer, what function test do we want to look for? What levels should this be at?
Liver function test - because it often metastases to the liver.
AST: 7-56
ALT: 5-40
What does a tumor marker tell us? What is the name of the tumor marker that can indicate that a person has colorectal cancer?
They can tell us if cancer is happening. It is called carcinoembryonic antigen (CEA).
Why are tumor markers not a good screening method
Because there are a large number of false positives - biopsy is the only definitive tool to diagnosis.
What are the other types of diagnostic studies we can use to help diagnosis and monitor cancer? 5
What scan is not routinely done for colorectal cancer
PET scan
Why is it so important to get colorectal cancer screenings?
Because in the early stages it is often asymptomatic (usually symptoms will appear, like rectal bleeding, in the later stages)
What are the stages of colorectal cancer
0: cancer has not grown beyond the inner layer of the colon wall
1: cancer has grown to the outer layer
2: tumor is through the wall, but has not spread to lymph nodes
3: cancer has spread to lymph nodes
4: cancer has spread to distant sites in the body
What is one of the biggest interventions for colorectal cancer
Surgery