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 (kō-lŏn′ə-skōp′, kə-)
A long flexible endoscope, often equipped with a device for obtaining tissue samples, that is used for visual examination of the colon. Also called coloscope.


(Medicine) an instrument for examining the colon, consisting of a flexible lighted tube that is inserted in the colon to look for abnormalities and to remove them or take tissue samples
[C20: from colon2 + -o- + -scope]
colonoscopy n


(koʊˈlɒn əˌskoʊp, kə-)
See under colonoscopy.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.colonoscope - an elongated fiberoptic endoscope for examining the entire colon from cecum to rectum
endoscope - a long slender medical instrument for examining the interior of a bodily organ or performing minor surgery
References in periodicals archive ?
Recent studies indicate that with proper training, virtual colonoscopies are just as effective at discovering pre-cancerous polyps as traditional colonoscopies, but with much less patient discomfort and potentially at a lower cost.
Possible reasons for the lack of an effect of previous colonoscopy on the prevalence of right-sided neoplasms include incomplete colonoscopies or worse bowel preparation in the right colon, which could result in some missed right-sided adenomas, the authors suggested.
The colonoscopies found and removed polyps at least 6 millimeters in length in 103 people, whereas the CT scans detected such growths in only 41, the researchers report in the April 14 Journal of the American Medical Association.
Because of the fear factor associated with traditional colonoscopies, the virtual procedure has the potential to increase the now dismal rate of colon cancer screenings.
The prospective, multi-center study, described in an abstract entitled "Improved Performance of a Non-Invasive Fecal DNA (fDNA) Test to Screen for Colorectal Cancer (CRC)," enrolled 40 individuals with CRC and 122 individuals with normal colonoscopies, none of whom had a personal or family history of polyps or CRC.
After examining the yield of these colonoscopies, the researchers determined that only 4% of the lowest risk group had significant lesions at the 6-year mark, compared with 40% of the highest risk group, Dr.
PHILADELPHIA -- The first colonoscopy done on a person has the greatest impact for preventing death from colorectal cancer, and subsequent surveillance colonoscopies play a lesser role, based on a new analysis of 20-year follow-up data collected in the National Polyp Study.
Conducted by colorectal surgeons at the Ochsner Clinic in New Orleans, the study involved 832 patients with a family history of colon cancer who underwent periodic colonoscopies from 1981 to 2001.
Professor of Medicine, Indianapolis University School of Medicine and Director of Endoscopy, Indiana University Hospital, stated, "OsmoPrep provides excellent colon cleansing in a highly tolerable tablet formulation making colonoscopies simple for both the physician and the patient.
They enrolled 284 patients over a 13-month period and performed two consecutive same-day colonoscopies in 240 of the patients.
Patients with small rectal hyperplastic polyps should be considered to have normal colonoscopies and should have their next follow-up colonoscopy in 10 years.
We believe that by addressing looping, the Navigator Endoscopy System has the potential to significantly increase the number of colonoscopies that endoscopists are able to perform, which will be particularly important as the demand for the procedure continues to grow.