Investigations

Question 1

What is the gold standard investigation for CRC?

Answer 1

Colonoscopy

Question 2

What are 2 investigations that can be undertaken in a patient suspected of having CRC?

Answer 2

1. CBE - to detect IDA

2. Colonoscopy - allows full visualisation of the colon

Question 3

List 2 preoperative investigations for CRC and why they are performed

Answer 3

1. Tumour marker - CEA. To aid follow-up management and detect recurrence.
2. Radiographic imaging of the liver, chest, abdomen, and pelvis to check for metastases and regional tumour extension.