<prompt> Primary sclerosing cholangitis is associated withUlcerative cholangitisRetroperitoneal fibrosisReidels thyroiditisAll of the above  <response>: Features of ulcerative colitis in case of PSC70.PSC may be associated with retroperitoneal fibrosis,mediastinal fibrosis,Riedels thyroiditis,orbital pseudotumour. Reference:SRBs manual of surgery,5th edition,page no:658. 