Prevalence of nasal polyps in 420 patients with aspirin intolerance
| Patients with polyps: 48 (11.4%); patients without polyps: 372 (88.6%) | |
| Aspirin intolerance | |
| Type A (n = 69) | 38 with polyps (55%); 31 without polyps (45%) |
| Type B (n = 323) | 8 with polyps (2.4%); 315 without polyps (97.6%) |
| Type C (n = 28) | 2 with polyps (7.1%); 26 without polyps (92.9%) |