WorksheetsColorectal Cancer
Total questions: 10
Worksheet time: 20mins
A 75 year old man presented with bleeding PR. A colonoscopy revealed a rectal adenocarcinoma at 10 cms from the dentate line. The following tests will be schedule for him
Staging CT scan
MRI pelvis for local staging (nodes and depth of invasion)
EUS rectum can also be used for local staging and is cheaper than MRI
CEA
Statement below is related to colorectal cancers?
Right sided cancers commonly present with iron deficiency anaemia and left sided tumours present with change in bowel habit
Streptococcus bovis bacteraemia and Clostridium septicum sepsis can be due to underlying colonic malignancies
Synchronous cancer occur in up to 5 percent of patients
Serum CEA has prognostic utility in patients with newly diagnosed colorectal cancer
What are risk factors for developing colon cancer?
Age more than 40 years old
Genetics FAP & Lynch syndrome
Inflammatory bowel disease
High fiber diet
Which of the following is a warning sign of colon cancer?
Diarrhea or constipation
Blood in the stool
Vomiting
Rectal bleeding
Where does colon cancer usually spread?
Brain
Bones
Kidneys
Liver
What foods may cause colon cancer?
Leafy greens
Dairy products
Red meat and processed meat
Preservative food
The following is associated with the greatest risk for colorectal cancer
Development of Lynch syndrome
Hereditary mutation of the APC gene
Dietary factors
Lifestyle choices, including alcohol consumption and sedentary habits
Which of the following physical findings is suggestive of more advanced disease?
Fatigue
Iron-deficiency anemia
Weight loss
Ascites
Which of the following is recommended guidelines on colorectal cancer screening?
Colonoscopy every 10 years, beginning at age 50 years, until the end of life
Fecal occult blood testing every 5 years after age 50 years
Sigmoidoscopy every 5 years, with fecal occult blood testing every 3 years
Annual screening colonoscopy, beginning at age 50 years for high risk individual
Which part of the large bowel do most colorectal cancers occur?
Ascending colon and rectum
Transverse colon and rectum
Descending colon and rectum
Sigmoid colon and rectum
