Pol Przegl Chir. 2020 Feb 12;92(5):1-5. doi: 10.5604/01.3001.0013.8157.
<b>Introduction:</b> U lcerative colitis (CU) is an inflammatory disease predisposing to colorectal cancer. Colorectal cancer in ulcerative colitis is more often metachronous or synchronous. <br><b>Case report:</b> In this case report we present a patient with multifocal colorectal cancer in the course of CU and operative treatment that was implemented. Additionallyprimary sclerosing cholangitis was diagnosed in this patient post-operatively.