Table 2.

Presenting symptoms.

Symptoms	No. of patients	%
Headache	21	618
Posterior nasal discharge	19	559
Nasal obstruction	7	205
Facial numbness	5	147
Anosmia	2	5,9
Decreased visual acuity	2	5,9
Diplopia	1	2,9
No symptoms	5	147
Others*	9	265

*Others : dizziness [4], dysgueusia [1], otalgia [1].