FESS surgery is performed for many diseases such as chronic sinusitis, nasal polyposis, inverted papilloma, intranasal tumors, sinus tumors, cerebrospinal fluid leak (CSF fistula) repair.

Tonsil reduction is necessary in cases where tonsillitis causes constant illness, difficulty in swallowing, snoring and bad breath. Otherwise, the immune system of children weakens and causes serious developmental disorders. 

It is not possible to treat the sinusitis problem at home. However, with various precautions that can be taken, the complaints caused by the sinusitis problem can be prevented. These measures can be listed as follows;