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The role of ancillary tests in the distinction of UC from CD is reviewed. The low sensitivity of serological markers limits their usefulness. Other tests include upper endoscopy and magnetic resonance imaging. The definition of IC may not be a purely histological one derived from resected specimens, but rather a clinicopathological one. This review offers some personal observations and viewpoints, and proposes an approach to some of the relatively more esoteric combinations of findings.<\/jats:p>","DOI":"10.1136\/jcp.2003.015214","type":"journal-article","created":{"date-parts":[[2004,11,24]],"date-time":"2004-11-24T13:12:48Z","timestamp":1101301968000},"page":"1233-1244","source":"Crossref","is-referenced-by-count":154,"title":["Indeterminate colitis"],"prefix":"10.1136","volume":"57","author":[{"given":"M","family":"Guindi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R H","family":"Riddell","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2004,11,24]]},"reference":[{"key":"2025092610023855000_57.12.1233.1","unstructured":"Lewin KJ, Riddell RH, Weinstein WM. Gastrointestinal pathology and its clinical implications. 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