This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lacrimal Gland, Subject name: Ophthalmology
Dacrocystorhinostomy is contraindicated in all EXCEPT 
Select and explain. 
A. Atrophic-rhinitis, B. DNS, C. Carcinoma lacrimal gland, D. Chronic dacrocystitis
D: Chronic dacrocystitis
Answer: D: Chronic dacrocystitis 
Explanation: Ans. d (Chronic dacrocystitis). (Ref. Parson,IWSO1-504; Basak, Ophthomology 2nd /282, 336)Dacrocystorhinostomy (DCR)# It is surgical procedure of choice in chronic dacrocystitis.# A communication is made between lacrimal sac and middle meatus of nose.# Contraindications:# DNS} # Carcinoma of lacrimal gland(Mnemonic = DCR)# Rhinitis (Atrophic)