Help
Subscribe


All of GastroHep is now free access! - Click here to register Read For FREE - Our full range of review articles
GastroHep.com - the global online resource for all aspects of gastroenterology, hepatology and endoscopy
GastroHep.com - the global online resource for all aspects of gastroenterology, hepatology and endoscopy Profile of Guido Tytgat Profile of Pete Peterson Profile of Peter Cotton Profile of Roy Pounder

Home

News  
Journals
Review Articles
Slide Atlas
Video Clips
Online Books
Advanced Digestive Endoscopy
Classical Cases
Conference Diary
PubMed
International GH Links
USA GH Links
National GH Links
National GI Societies
Other Useful Links




Emails on Gastroenterology and Hepatology
the National AIDS Treatment Advocacy Project
Visit the gastroenterology section of the EUMS

News

Colorectal cancer screening interval after negative colonoscopy

The latest issue of Surgical Endoscopy investigaates the correct screening interval for colorectal cancer after negative colonoscopy.

News image

Despite the high sensitivity of screening colonoscopy, polyps and cancers can still go undetected.

With the polyp-to-cancer transformation cycle averaging 7–10 years, present guidelines recommend repeat colonoscopy within 10 years after negative screening.

However, not all colorectal malignancies follow this decade-long progression.

Dr Steven Nakao and colleagues evaluated the incidence and pathology of colorectal cancers following a previous negative screening colonoscopy.

Records of patients who underwent a colectomy at our institution, from 1998 to 2009, were reviewed retrospectively.

The researchers reported that a total of 1,784 patient records were screened using exclusion criteria for inclusion in this study.

Group 1 included patients with a negative colonoscopy within the previous 5 years.

Group 2 included patients without a previous colonoscopy or with a previous colonoscopy more than 5 years prior.

Group 1 patients were evaluated by colonoscopy for anemia, diverticulitis, signs of obstruction, and bleeding.

Age, tumor location, operation performed, and pathology findings were recorded.

The team of researchers assessd that the χ2 test and paired t test were used for statistical analysis.

A total of 233 patients were included in this study.

18% developed colorectal cancer
Surgical Endoscopy

Group 1 contained 43 patients with a mean age of 73 years.

Group 2 had 190 patients with a mean age of 68 years.

The team of doctors noted that group 1 consisted of 18 male and 25 female patients, and Group 2 included 94 male and 96 female patients.

Both groups were further classified into age categories including 50 years, 50–80 years, and 80 years.

The research team noted that 18% of the total study population had newly discovered colorectal cancer within a 5-year colonoscopy screening period.

There were no significant differences in the distribution of the T and N stages between the 2 groups, and no statistically significant differences when the rate of lymphovascular invasion and perineural invasion were compared.

Within 5 years, 18% developed colorectal cancer.

Dr Nakao's team commented "Most of these malignancies were found within the 50–80-year age group and located predominantly in the right colon and distally in the sigmoid and rectum."

"While distal cancers may be visualized by flexible sigmoidoscopy, those located more proximally may be missed, necessitating the need for a full colonoscopy."

"Although staging was similar between the two groups, Group 1 tumors were less aggressive despite having appeared within 5 years."

"As a result of our incidence of colorectal cancer within a 5-year interval, a shorter period for routine colonoscopy may be considered."

Surgical Endoscopy 2013: 3(27): 768-773
01 April 2013

Go to top of page Email this page Email this page to a colleague

 18 December 2014

Advanced search
 18 December 2014 
Vitamin D and sustained virologic response in HCV
 18 December 2014 
Factor for treatment in IBS
 18 December 2014 
Assessment of Crohn's disease activity
 17 December 2014 
Remission from hepatic encephalopathy with rifaximin
 17 December 2014 
Colonic adenoma recurrence after endoscopic resection
 17 December 2014 
Non-invasive measures of fatty liver
 16 December 2014 
Diagnostic tool for dysplasia in Barrett's
 16 December 2014 
Screening esophagus during routine US
 16 December 2014 
Therapeutic targets in IBD
 15 December 2014 
Food allergy and food intolerances
 15 December 2014 
Esophageal adenocarcinoma and Barrett's
 15 December 2014 
Outcomes of mildly abnormal liver function tests
 12 December 2014 
Hospital readmission after colorectal resection
 12 December 2014 
Detecting intestingal damage in Crohn's
 12 December 2014 
SSRIs for noncardiac chest pain
 11 December 2014 
Hep C and post-liver transplant diabetes
 11 December 2014 
Barrett’s risk factors in African Americans vs Non-Hispanic Whites
 11 December 2014 
Antiviral therapy and post-hepatectomy survival
 10 December 2014 
Prompt endoscopy for uninvestigated dyspepsia
 10 December 2014 
Microbiota composition on gluten-free diet in celiac disease
 10 December 2014 
Utilization of health care resources in ileostomy patients
 09 December 2014 
Diverticular disease and irritable bowel syndrome
 09 December 2014 
Food intolerance
 09 December 2014 
Management of acute colonic diverticulitis
 08 December 2014 
Portal vein obstruction
 08 December 2014 
Readmission after restorative proctocolectomy with IPAA
 08 December 2014 
Metachronous colorectal cancer
 05 December 2014 
Esophageal cancer in Veterans with Barrett’s esophagus
 05 December 2014 
Clinical outcome in pediatric Crohn's
 05 December 2014 
Hepatocellular carcinoma surveillance survey
 04 December 2014 
Diagnosis of NAFLD and NASH
 04 December 2014 
Ethnic disparities in gastric cancer
 04 December 2014 
Gilbert's syndrome and respiratory health
 03 December 2014 
Unmet treatment needs of GERD
 03 December 2014 
Finding sessile serrated adenomas during colonoscopy
 03 December 2014 
Antibiotics in acute uncomplicated diverticulitis
 02 December 2014 
Vit D and sustained virologic response in Hep C
 02 December 2014 
Severe esophagitis and upper GI bleeding
 02 December 2014 
Critical illness in patients with IBD
 01 December 2014 
Differentiates inflammatory from functional intestinal disorders
 01 December 2014 
Racial disparities in colorectal cancer survival
 01 December 2014 
Algorithms for the diagnosis of Lynch syndrome
 28 November 2014 
C. diff and pediatric IBD
 28 November 2014 
Fruit and vegetable consumption and esophageal cancer
 28 November 2014 
IBD and students' adjustment to college
 27 November 2014 
Prediction of functional GI disorders later in life
 27 November 2014 
Differences in the incidence of esophageal adenocarcinoma
 27 November 2014 
End points of outcomes in primary biliary cirrhosis
 26 November 2014 
Vegetables and garlic and colorectal cancer risk
 26 November 2014 
Detection of gastric precancerous conditions
 26 November 2014 
Fertility in women with celiac disease
 25 November 2014 
Esophagogastric junction of children with GERD
 25 November 2014 
Symptom activity index for eosinophilic esophagitis
 25 November 2014 
Placebo response rate in fistulizing Crohn's
 24 November 2014 
Nasoenteric tube feeding in acute pancreatitis
 24 November 2014 
Corticosteroids and infections in elderly-onset IBD
 24 November 2014 
Adhesions in abdominal and pelvic surgery
 21 November 2014 
Hepatic involvement in IgG4-related disease
 21 November 2014 
Mortality of chemoembolization in hepatocellular carcinoma
 21 November 2014 
Skin cancer in ulcerative colitis patients

Blackwell Publishing


GastroHep.com is a Blackwell Publishing registered trademark
© 2014 Wiley-Blackwell and GastroHep.com and contributors
Privacy Statement
Disclaimer
About Us