Article Text

other Versions

PDF
Letter
The learning curve for detection of non-polypoid (flat and depressed) colorectal neoplasms
  1. Sarah McGill1,2,
  2. Tonya Kaltenbach1,2,
  3. Shai Friedland1,2,
  4. Roy Soetikno1,2
  1. 1Gastrointestinal Endoscopy Unit, Veterans Affairs Palo Alto Heath Care System, Palo Alto, California, USA
  2. 2Department of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, California, USA
  1. Correspondence to Dr Roy Soetikno, Department of Gastroenterology and Hepatology, Veterans Affairs Palo Alto, 3801 Miranda ave, Palo Alto, CA 94304, USA and Department of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA; soetikno{at}earthlink.net

Statistics from Altmetric.com

We read with interest the two excellent studies on interval colorectal cancers (CRC) following colonoscopy and wish to present important data relevant to the prevention of interval CRC. In a pooled multicohort analysis, Robertson and coauthors found that invasive cancer was diagnosed in 0.6% of patients after clearing colonoscopy among eight large North American trials, and concluded that half of these were likely missed lesions.1 In a population-based study, le Clercq and coauthors reported that CRC found following colonoscopy were more likely to have non-polypoid morphology than prevalent cancers.2

We previously described that non-polypoid colorectal neoplasms (NP-CRN) harbour more advanced pathology than polypoid neoplasms.3 Indeed, due to their subtle appearance, NP-CRN may be a key contributor to interval CRC. The learning curve in their detection is largely unknown.

Using available data, we summarised the learning curve (see …

View Full Text

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.

Linked Articles

  • Colon cancer
    Douglas J Robertson David A Lieberman Sidney J Winawer Dennis J Ahnen John A Baron Arthur Schatzkin Amanda J Cross Ann G Zauber Timothy R Church Peter Lance E Robert Greenberg María Elena Martínez