1 | Rectal bleeding with a change in bowel habit to looser stools and/or increased frequency of defecation persistent for 6 weeks. All ages | (i) Correct change in bowel habit |
(ii) Rectal bleeding |
(iii) Symptoms present for at least 6 weeks |
(iv) New symptoms; history not exceeding 18 months |
2 | Change in bowel habit as above without rectal bleeding and persistent for 6 weeks. Over 60 y | (i) Correct change in bowel habit |
(ii) Rectal bleeding not present |
(iii) Age ⩾60 y |
(iv) Symptoms present for at least 6 weeks |
(v) New symptoms; history not exceeding 18 months |
3 | Rectal bleeding persistently without anal symptoms.* Over 60 y | (i) Rectal bleeding |
(ii) Change in bowel habit not present |
(iii) No perianal symptoms |
(iv) Age ⩾60 y |
(v) Symptoms present for at least 4 weeks |
(vi) New symptoms; history not exceeding 18 months |
4 | A definite palpable right sided abdominal mass. All ages | (i) Right sided abdominal mass |
5 | A definite palpable rectal mass (not pelvic). All ages | (i) Intralumenal rectal mass (not pelvic) |
6 | Unexplained iron deficiency anaemia All ages for men, postmenopausal women | Women over 50 y (postmenopausal), haemoglobin ⩽10 g; men: haemoglobin ⩽11 g |