Quantitative assessment of the subepithelial collagen band does not increase the accuracy of diagnosis of collagenous colitis
2008 (English)In: American Journal of Clinical Pathology, ISSN 0002-9173, E-ISSN 1943-7722, Vol. 130, no 3, 375-381 p.Article in journal (Refereed) Published
The thickness of eosinophilic band in collagenous colitis (CC) was assessed by 3 methods: histologic estimates (22 observers), conventional measurements using a calibrated micrometric scale (1 observer), and semiautomatic micrometric measurements (1 observer). By the histologic estimate technique, 7.4% of the results failed to diagnose CC; by calibrated micrometry, the failure was 6% and by semiautomatic micrometry, 6%. The main difficulty in measuring the thickness of the CC band is that the deeper border of the band appears fuzzy and hairy-irregular. CC should be defined not exclusively on the basis of the thickness of the collagen table, but as a microscopic constellation characterized by a distorted superficial cell arrangement, with areas of epithelial denudation and inflammatory cells in the superficial epithelium and the lamina propria. In agreement with Lazenby's statement: "Focusing solely on the collagen band can result in both over- and underdiagnosis"
Place, publisher, year, edition, pages
2008. Vol. 130, no 3, 375-381 p.
Gastroenterology and Hepatology Cell and Molecular Biology
Research subject Pathology
IdentifiersURN: urn:nbn:se:uu:diva-125942DOI: 10.1309/K7MH8UCK3MR7Q77LPubMedID: 18701410OAI: oai:DiVA.org:uu-125942DiVA: diva2:321425