Audit on flexible sigmoidoscopy for rectal bleeding in a district general hospital: are we over-loading the resources?

Rigid or flexible sigmoidoscopy in colorectal clinics? Appraisal through a systematic review and meta-analysis

AIM

Rigid sigmoidoscopy is sometimes performed at first presentation in colorectal clinics. We assessed the feasibility of flexible sigmoidoscopy in similar situations by comparing it with rigid sigmoidoscopy as a first investigative tool.

METHODS

The Medline, Embase, and Cochrane databases were searched for randomized and non-randomized clinical trials comparing the usefulness of rigid and flexible sigmoidoscopy. The risk difference (RD) and weighted mean difference (WMD) were calculated for the cancers/abnormalities detected and discomfort associated with the procedure, respectively. The standard mean difference (SMD) was calculated for the depth of examination and duration of the procedure.

RESULTS

Flexible sigmoidoscopy had a significantly higher rate of detection of cancers and total abnormalities (RD of 0.020 and 0.138 and 95% confidence interval [CI] of 0.006-0.034 and 0.077-0.200, respectively), and rigid sigmoidoscopy caused significantly more patient discomfort (WMD of 0.981 and 95% CI of 0.693-1.269). Flexible sigmoidoscopy provided significantly greater depth of examination (SMD of 3.175, 95% CI of 2.397-3.954), and rigid sigmoidoscopy required less time (SMD of -1.601, 95% CI of -2.728 to -0.474).

CONCLUSIONS

Flexible sigmoidoscopy is a better investigative tool in colorectal clinics than the rigid sigmoidoscopy. Implementation of this idea can help in early diagnosis at first presentation and can certainly expedite the management of colorectal malignancies.

Correlation between preoperative endoscopic and intraoperative findings in localizing colorectal lesions

BACKGROUND

Colonoscopy findings compared with findings at time of surgery have a discrepancy rate of 3-21%. The objective of our study was to investigate this discrepancy and provide potential resolutions.

METHODS

In this retrospective study, we identified 400 patients who underwent colonoscopy followed by colon resection at our community hospitals in 1999-2006. Discrepancies between colonoscopy and intraoperative findings were noted. Each discrepancy was classified as major if the surgical procedure had to be altered, the lesion was missed, an unnecessary segment was removed, or the incision was extended. A discrepancy was classified as minor if there was no alteration in planned surgery.

RESULTS

Of the 400 cases, 160 (40%) were located in the right colon, 13 (3%) were in the transverse colon, 185 (46%) were in the left colon, and 42 (11%) were in the rectum. A total of 48 (12%) discrepancies between colonoscopy and intraoperative findings were identified: 26 (54%) were major and 22 (46%) were minor. Thirteen (27%) were in the proximal colon (3 major and 10 minor discrepancies), 3 (6.3%) were in the transverse colon (all major), 22 (46%) were in the distal colon (17 major and 5 minor), and 10 (21%) were in the rectum (3 major, 7 minor). Major discrepancies were significantly higher in the left colon (17 of the 185 left-sided lesions; 9.1%) than in the right colon (3/160; 1.9%; P = 0.045).

CONCLUSIONS

In our study, colonoscopy has an error rate of 12% when used to localize tumors; more than half of these patients require significant unanticipated changes in their surgery. The discrepancies are significantly higher in left side of colon.

Lack of colonic neoplastic lesions in patients under 50 yr of age with hematochezia: a multicenter prospective study

OBJECTIVES

It is still not clear what is the best way of evaluating rectal bleeding in young people. Our aim was to examine the prevalence of neoplastic colonic lesions in these patients.

METHODS

This prospective, multicenter study enrolled 622 patients aged 30-50 yr (F 232/M 390) consecutively seen in 14 open-access endoscopy departments for hematochezia, defined as bright red blood from the rectum, red blood noted either in the feces, on toilet paper, or in the toilet bowl. At colonoscopy, pathology was stratified as either proximal or distal to the splenic flexure. Exclusion criteria were a history of colitis, colorectal cancer, polyps, anemia, significant weight loss, severe bleeding, or strong family history of colorectal cancer.

RESULTS

Malignant polyps were found in two patients (0.6%), aged 30-40 yr, one in the rectum and one in the sigmoid. A malignant polyp of the cecum was found in a 41-yr-old patient. Another, aged 47, had a malignant granular-cell tumor of the rectum. A total of 35 advanced adenomas were identified in 18 patients. In 7 patients (2.2 %) within the 30-40 yr age bracket we found 8 advanced adenomas (all in the rectum/sigmoid). The other 27 advanced adenomas were in 11 patients (3.5%) in the 41-50 yr age bracket. In this age group we observed 3 patients with 10 isolated proximal advanced adenomas.

CONCLUSIONS

In patients younger than 40 yr with hematochezia, advanced neoplastic lesions are rare and usually located in the rectum and sigmoid colon. Sigmoidoscopy appears to be sufficient for evaluation in these patients.

Nurse led flexible sigmoidoscopy in primary care--the first thousand patients

OBJECTIVES

Secondary care Trusts have traditionally been providers of flexible sigmoidoscopy services in the United Kingdom. The aim of this study was to establish a Nurse-led flexible sigmoidoscopy clinic that would provide a patient orientated service in a primary care setting.

PATIENTS AND METHODS

A protocol driven flexible sigmoidoscopy clinic was established in a primary care setting. The first thousand patients who underwent flexible sigmoidoscopy at the community clinic were prospectively studied.

RESULTS

A nurse endoscopist performed 1002 procedures on 1000 patients. Median time from referral to flexible sigmoidoscopy was 35 days (Range 1-180 days). Two hundred and twenty-two (22%) patients were diagnosed with significant colonic pathology including 25 (2.5%) patients with colorectal cancer. Median time from referral to histological diagnosis of colorectal cancer was 26 days (range 7-87 days). No complications were encountered. Patients who required further follow-up were referred to a Consultant led (29%) or Nurse led clinic (5%) in secondary care. Patient satisfaction as assessed by postal questionnaire indicated that 447 (99%) patients were satisfied with the service.

CONCLUSIONS

A community endoscopy clinic can provide a safe and effective flexible sigmoidoscopy service with high levels of patient satisfaction. Nurse Endoscopists can extend their role in primary care with adequate training and support from secondary care hospitals.