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Related Experiment Videos

Cat scratch colon.

W M McDonnell1, F Loura, M J Pointon

  • 1Department of Gastroenterology, Western Washington Medical Group, Everett, Washington 98203, USA. mcdonnell56@mac.com

Endoscopy
|May 23, 2007
PubMed
Summary
This summary is machine-generated.

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Bright red linear marks, termed "cat scratch" colon, were found in 0.25% of colonoscopies, primarily in older women. This finding may be linked to superficial mucosal breaks and a higher incidence of collagenous colitis.

Area of Science:

  • Gastroenterology
  • Endoscopy
  • Colorectal Pathology

Background:

  • Uncharacterized bright red linear marks in the right colon, termed "cat scratch" colon, are occasionally observed.
  • This specific finding has not been previously documented in medical literature.

Purpose of the Study:

  • To describe the prevalence and characteristics of "cat scratch" colon.
  • To investigate potential associations with other colorectal conditions.

Main Methods:

  • Prospective analysis of 8277 colonoscopies performed at a single private endoscopy center.
  • Biopsies were taken from all identified "cat scratch" colon cases and reviewed by two pathologists.

Main Results:

  • Twenty-one cases of "cat scratch" colon were identified, exclusively in the ascending colon and cecum, with a prevalence of 0.25%.

Related Experiment Videos

  • The majority of affected individuals were women.
  • A significantly higher proportion of collagenous colitis was observed in patients with "cat scratch" colon (14%) compared to the overall cohort (0.15%).

    • Conclusions:

    • "Cat scratch" colon, characterized by bright red linear markings in the cecum and ascending colon, has a prevalence of 0.25%.
    • These markings are hypothesized to be superficial mucosal breaks, potentially caused by barotrauma.
    • Older women represent the primary demographic, with a notable association with collagenous colitis.