Stem 1
A 23 year old male presents with a life long history of unilateral nasal discharge, it is mucoid and clear, no blood, no pus. There is associated nasal blockage, he has tried a range of steroid sprays which have not helped. What is your differential diagnosis?
Stem 2
What is the abnormality shown below

Stem 3
How would you manage this patient?
Stem 4
Are there any associations with choanal atresia?