We previously reported that the frequency of colorectal carcinomas (CRC) in Crohn's disease (CD) had increased at this hospital between 1951 and May 1996. The aim was to compare the frequency of CRC in CD between June 1996 and September 2007 to that found between 1951 and May 1996. For that purpose colectomy specimens with an IBD-CRC diagnosis filed during the last 11 years were reviewed. It was found that 29 patients with IBD developed a CRC at this hospital: 21 had CD (or 1.91 cases/year) and the remaining eight, ulcerative colitis (or 0.72 cases/year). At this hospital, the number of cases of CRC in Crohn's colitis increased from 0.28/year between 1951 and the end of 1989, to 1.69 patients/year between 1990 and May 1996, and to 1.91 patients/year between June 1996 and September 2007 (present report). The marginal increase number of patients with CRC in Crohn's colitis/year during the last 11 years at this hospital might be only apparent, considering that the incidence of Crohn's disease in the county has dramatically increased, and that the localization of Crohn's disease has changed in later years, with a predilection for the colon and rectum.