Colorectal Adenoma, Colorectal Cancer
Conditions
Interventions
Observing the ascending colon during colonoscopy, in addition to the usual forward observation, retroflex observation and a second forward observation are also performed to examine the adenoma detecti
Sponsors
Kohseichuo General Hospital, Digestive Disease Center
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1) Patients aged 40 years or older 2) Patients who have tested positive for occult blood in their stool and are planning to undergo a colonoscopy for abdominal symptoms 3) Patients who have had endoscopic resection of early colorectal cancer or colonic polyps in the past and are planning to undergo a colonoscopy for follow-up purposes. 4) Patients who have given written informed consent to participate in the study.
Exclusion criteria
Exclusion criteria: 1) Patients with inflammatory bowel disease 2) Patients suffering from gastrointestinal polyposis, including familial adenomatous polyposis 3) Patients with a history of colorectal surgery 4) Patients undergoing colonoscopy for endoscopic treatment such as endoscopic polypectomy 5) Patients undergoing emergency colonoscopy for gastrointestinal bleeding 6) Patients with colonic stenosis
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Ascending Colon- Adenoma Detection Rate(AC-ADR) in the each examination phase | — |
Secondary
| Measure | Time frame |
|---|---|
| Adenoma Miss Rate (AMR) in observation 1 and observation 1 + 2 per examination, the rate of cases where adenomas were found in observation 2, the success rate of retroflex observation in the ascending colon, the average pain score (0 points: no pain, 5 points: most severe pain) and complication rate during retroflex observation in the ascending colon. | — |
Countries
Japan
Contacts
Public ContactFumihiko Nakamura
Kohseichuo General Hospital Digestive Disease Center
Outcome results
None listed