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  • Title: Temporal trends in colon neoplasms in patients with primary sclerosing cholangitis and ulcerative colitis.
    Author: Navaneethan U, Venkatesh PG, Lashner BA, Remzi FH, Shen B, Kiran RP.
    Journal: J Crohns Colitis; 2012 Sep; 6(8):845-51. PubMed ID: 22398080.
    Abstract:
    BACKGROUND AND AIM: Surveillance for colon cancer is recommended in patients with primary sclerosing cholangitis (PSC) and ulcerative colitis (UC). It is unclear whether characteristics of colon neoplasia have changed over time. The aim of the study was to examine the temporal trends in colon neoplasia in patients with PSC and UC. METHODS: A total of 167 patients followed up at our institution between 1985 and 2011, 55 of these with neoplasia detected on colonoscopic biopsy were identified. Characteristics of patients with colon neoplasia in PSC-UC were studied for two different time periods: 1985-1998 (early cohort) compared to 1999-2011 (recent cohort). RESULTS: The median age at diagnosis of colon neoplasms was 53 years (median IQR, 43-63). The baseline characteristics were similar in both cohorts. The colonic neoplasms that developed in PSC-UC patients were spread throughout the colon on colonoscopy, while there was predominant right sided distribution on colectomy in both cohorts. (81.7% vs. 18.3%, p<0.001) Compared to the recent cohort, both the PSC (17 vs. 11 years, p=0.02) and UC duration (20 vs. 12 years, p=0.02) were longer in the early cohort. There were no differences in the grades and stages of cancer diagnosis. In addition, no differences in transplant-free survival or UC characteristics were revealed. CONCLUSIONS: With annual colonoscopic surveillance, dysplasia and cancer in patients with a combined diagnosis of PSC//UC is being diagnosed in patients with a shorter duration of these conditions. The nature and the location of neoplasia have, however, not changed.
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