Hope this help answer your
question:
Visit your GP if you notice any signs of bleeding from your
rectum.
Your GP will ask about your symptoms and examine you. This may
involve a rectal examination, where he or she will gently insert a
gloved finger into your rectum. Your GP may also ask you about your
medical history.
Your GP may use a proctoscope to look inside your rectum. A
proctoscope is a narrow, tube-like telescopic camera. Air can be
blown through the tube to open up the bowel so it can be seen more
clearly. This test can help to rule out problems in your
rectum.
Alternatively, your GP may refer you for a flexible
sigmoidoscopy or colonoscopy test that will need to be done in
hospital. This allows your doctor to look inside your large bowel.
These tests are sometimes done to check that your condition isn't
caused by something more serious.
