title: Villous and serrated adenomatous growth bordering carcinomas in inflammatory bowel disease.
abstract: The histologic phenotype of the dysplastic lesion juxtaposing colorectal carcinomas was assessed in 100 consecutive colectomy specimens: in 50 patients with inflammatory bowel disease (IBD) and in 50 controls (non-IBD patients). Adenomatous growths (AG) were regarded both Dysplasia Associated Lesion or Mass (DALM) and sporadic adenomas. AGs juxtaposing carcinomas were found in 76% (n = 38) of the IBD cases: 52.3% (20 out of 38) were villous, 28.9% (11 out of 38) serrated, 5.3% (2 out of 38) tubular and the remaining 13.2% (5 out of 38) were mixed AGs. Juxtaposing AGs (sporadic adenomas) were also found in 58% (n = 29) of the control cases: 51.7% (15 out of 29) were villous, 6.9% (2 out of 29) tubular, 3.4% (1 out of 9) serrated and the remaining 37.9% (11 out of 29) were mixed. The majority or 81.2% (31 out of 38) of the dysplastic lesions juxtaposing IBD carcinomas were villous or serrated AGs, but only 55.1% (16 out of 29) in control cases. Serrated AGs in particular accounted for nearly 29% of the non-invasive dysplastic lesions abutting IBD carcinomas but only for 3% in control specimens. It would appear that villous and serrated AGs are the most common non-invasive neoplastic lesions from which IBD carcinomas originate.
authors.affiliation: Gastrointestinal and Liver Pathology Research Laboratory, Department of Pathology, Karolinska Institute, 171 76 Stockholm, Sweden. Carlos.Rubio@onkpat.ki.se
authors.forename: C A
authors.initials: CA
authors.lastname: Rubio
authors.forename: R
authors.initials: R
authors.lastname: Befrits
authors.forename: E
authors.initials: E
authors.lastname: Jaramillo
authors.forename: G
authors.initials: G
authors.lastname: Nesi
authors.forename: A
authors.initials: A
authors.lastname: Amorosi
mesh_terms: D000236:Adenoma / Q000150:complications / Q000473:pathology*; D000328:Adult; D000368:Aged; D003110:Colonic Neoplasms / Q000150:complications / Q000473:pathology*; D005260:Female; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000150:complications* / Q000473:pathology*; D007413:Intestinal Mucosa / Q000473:pathology*; D008297:Male; D008871:Microvilli / Q000473:pathology; D008875:Middle Aged; D012004:Rectal Neoplasms / Q000150:complications / Q000473:pathology*; D012016:Reference Values