title: Collagenous colitis in symptomatic subjects without endoscopic morphologic evidence: case report.
abstract: Collagenous colitis (CC) is a rare pathology and, even though various etiopathogenetic hypotheses have been put forward, the etiology and pathology are still not well defined. We report the case of a female patient suffering from chronic watery diarrhoea, positive for guaiac-based fecal occult blood test and morphologically negative to endoscopic investigation, but histologically classifiable as CC. This case report suggests that the clinical history must lead towards the execution of a colonoscopy with bioptic samples done even on apparently normal mucosa. Furthermore, the clinic should always signal a suspect CC to the anatomopathologist in order to have a correct diagnosis.
authors.affiliation: Department of Gastroenterology, San Martino Hospital, Genoa, Italy. alexsumberaz@smartino.ge.it
authors.forename: A
authors.initials: A
authors.lastname: Sumberaz
authors.forename: M
authors.initials: M
authors.lastname: Valentini
authors.forename: E
authors.initials: E
authors.lastname: Delehaye
authors.forename: R
authors.initials: R
authors.lastname: Gentile
authors.forename: G
authors.initials: G
authors.lastname: Testino
mesh_terms: D003092:Colitis / Q000175:diagnosis* / Q000378:metabolism*; D003094:Collagen / Q000378:metabolism*; D004724:Endoscopy; D005260:Female; D006801:Humans; D008875:Middle Aged; D009780:Occult Blood
chemical_list: D003094:Collagen