This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and PNS, Subject name: ENT
Which agent is used to prevent synechiae after DCR surgery- 
Select and explain. 
A. Mitomycin, B. Tacrolimus, C. Cyclosporine, D. Doxycycline
A: Mitomycin
Answer: A: Mitomycin 
Explanation: Ans. is 'a' i.e., Mitomycin o Now, Mitomycin is being increasingly used for this purpose and is proving more usefulo Mitomycin is an anticancer agent that has shown to decrease scar formation after E.N.T. surgeryo It is an antifibroblastic agent and thus prevents the wound healing and subsequent synechae formationo It is useful in preventing synechae formation in following operations :-i) DCRii) Sinus surgery