system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which is not pre-malignant at some site -
assistant
The correct answer is  Bronchiectasis is not a premalignant condition.

Cholelithiasis predisposes to carcinoma Gallbladder
Ulcerative colitis predisposes to :          

(a) colorectal cancer-Sabiston 16th/ep. 953
(b) cholangiocarcinoma.

Leukoplakia: Predisposes to squamous cell carcinoma at the respective site.