Atypicality Frequencies (Percentages) Recurrent 8 (35%) Chronic 8 (35%) Sinus mass 8 (35%) Orbital cellulites 5 (22%) Rhinitis 4 (17.5%) Pansinusitis 3 (13%) Dacryocystitis 1 (4.5%) Severe pain in the nose 1 (4.5%)

Table 1: The frequencies of different types of atypicalities in the atypical sinusitis (AtS) group.