W M McDonnell1, F Loura, M J Pointon, J K Greenson. 1. Department of Gastroenterology, Western Washington Medical Group, Everett, Washington 98203, USA. mcdonnell56@mac.com
Abstract
BACKGROUND: Bright red linear marks in the right colon are occasionally seen but have never been described in the medical literature. We have termed this finding "cat scratch" colon. METHODS: This was a prospective examination of 8277 colonoscopies at a single endoscopy center in a private practice setting. All cases of cat scratch colon were biopsied, and the results read by two pathologists. RESULTS: A total of 21 cases of cat scratch colon were identified, all in the ascending colon and cecum, with a prevalence of 0.25%. The majority of cases were in women. Although the colon was histologically normal in most cases, there was a significantly higher proportion of collagenous colitis in patients with cat scratch colon compared with the total cohort (14% vs. 0.15%). CONCLUSIONS: The prevalence of bright red linear markings (cat scratch colon) in the cecum and ascending colon is 0.25%. These markings appear to be superficial breaks in the mucosa possibly secondary to barotrauma. Patients tend to be older women with higher proportion of collagenous colitis.
BACKGROUND: Bright red linear marks in the right colon are occasionally seen but have never been described in the medical literature. We have termed this finding "cat scratch" colon. METHODS: This was a prospective examination of 8277 colonoscopies at a single endoscopy center in a private practice setting. All cases of cat scratch colon were biopsied, and the results read by two pathologists. RESULTS: A total of 21 cases of cat scratch colon were identified, all in the ascending colon and cecum, with a prevalence of 0.25%. The majority of cases were in women. Although the colon was histologically normal in most cases, there was a significantly higher proportion of collagenous colitis in patients with cat scratch colon compared with the total cohort (14% vs. 0.15%). CONCLUSIONS: The prevalence of bright red linear markings (cat scratch colon) in the cecum and ascending colon is 0.25%. These markings appear to be superficial breaks in the mucosa possibly secondary to barotrauma. Patients tend to be older women with higher proportion of collagenous colitis.
Authors: M Lourdes Ruiz-Rebollo; Benito Velayos-Jiménez; José María Prieto de Paula; María Alvarez Quiñones; José Manuel González Hernández Journal: Diagn Ther Endosc Date: 2011-04-28
Authors: Eui Ju Park; Joon Seong Lee; Tae Hee Lee; Dae Han Choi; Eui Bae Kim; Seong Ran Jeon; Su Jin Hong; Jin-Oh Kim Journal: Clin Endosc Date: 2015-03-27