<prompt> Which is not pre-malignant at some site -BronchiectasisCholilithiasisUlcerative colitisLeukoplakia  <response>: Bronchiectasis is not a premalignant condition.Cholelithiasis predisposes to carcinoma GallbladderUlcerative colitis predisposes to : a colorectal cancer-Sabiston 16thep. 953b cholangiocarcinoma.Leukoplakia: Predisposes to squamous cell carcinoma at the respective site. 