Eosinophilic chronic rhinosinusitis in East Asians

Table 2 Computed tomography features of eosinophilic chronic rhinosinusitis with nasal polyps and non-eosinophilic chronic rhinosinusitis with nasal polyps

	ECRSwNP(n = 27)	NECRSwNP(n = 33)
Total disease score of sinuses	14.42 ± 3.84b	9.64 ± 3.37
Number of involved sinuses	7.88 ± 1.22b	5.64 ± 1.49
Percentage of involvement in all sinuses	23.1%a	3.0%
Incidence of bilateral diseases in individual sinuses
Frontal	53.8%b	12.1%
Sphenoid	38.5%a	9.1%
Anterior ethmoid	53.8%a	12.1%
Posterior ethmoid	100.0%b	75.8%
Maxillary	96.2%a	69.7%
OMC	69.2%a	36.4%
Score of diseases in individual sinuses
Frontal	1.81 ± 1.51a	0.88 ± 0.91
Sphenoid	1.23 ± 1.28a	0.55 ± 0.76
Anterior ethmoid	3.27 ± 0.90b	2.27 ± 0.87
Posterior ethmoid	3.04 ± 1.04b	1.52 ± 0.95
Maxillary	2.23 ± 0.43	2.15 ± 0.69
OMC	2.85 ± 1.60	2.27 ± 1.20

^aP < 0.05,

^bP < 0.01 vs NECRSwNP. Scoring for sinus diseases on computed tomography (CT): 0 = normal, 1 = partial opacification, and 2 = total opacification; these points are applied to individual sinuses on each side; OMC is graded as 0 = not occluded, or 2 = occluded; deriving a maximum score of 12 per side. ECRSwNP: Eosinophilic chronic rhinosinusitis with nasal polyps; NECRSwNP: Non-eosinophilic chronic rhinosinusitis with nasal polyps; OMC: Ostiomeatal complex.