Table 2. Epidemiological criteria of rare airway tumors including prevalence, gender predominance, age predominance and associated risk factors.
| Rare airway tumor | Prevalence (percent or number of cases) | Gender predominance (male:female) | Age predominance (years of age) | Associated risk factors |
|---|---|---|---|---|
| Oncocytoma | 10 cases | M>F | − | Smoking |
| Mucus gland adenoma | − | F>M | − | − |
| Adenoid cystic carcinoma | 0.04–0.2% | 1:1 | 46 | − |
| Mucoepidermoid carcinoma | 0.1–0.2% | 1:1 | <30 | − |
| Myoepithelial carcinoma | 20 cases | 1:1 | − | − |
| Papilloma | 50 cases | |||
| Squamous | 6:1 | 54 | HPV | |
| Glandular | 1.2:1 | 68 | − | |
| Mixed | 5:1 | 58 | − | |
| Carcinoid tumor | 1–2% | − | <35 | − |
| Leiomyoma | 2% | M>F | 35–40 | − |
| Schwannoma | 51 cases | 2:3 | Adults | − |
| Hamartoma | 43 cases | 6.2:1 | 62 | − |
| Hemangioma | 10 cases | − | Infants | − |
| Lipoma | 0.1–0.5% | M>F | 50–60 | Smoking, obesity |
| Chondroma | 0.2% | 3:2 | 46 | − |
| Glomus tumor | 31 cases | 2:1 | 52 | − |
| Granular cell tumor | 31 cases | − | Adults | − |
| Non-Hodgkin’s Lymphoma | 0.23% | F>M | 40–60 | Smoking |
| Fibrosarcoma | 3.6% | M>F | Children and young adults | Radiation |
| Chondrosarcoma | − | 1.3:1 | 30–60 | − |
| Inflammatory myofibroblastic tumor | 0.04–0.07% | − | <16 | − |
| Solitary extramedullary plasmacytoma | 5 cases | 4:1 | 56 | − |