Crude prevalence and incidence of interstitial lung diseases (ILDs) in Seine-Saint-Denis (reviewed cases)
| ILD cases | Population >15 years of age# | |||
| Subjects n | Prevalence per 100 000 | Subjects n | Incidence per 100 000 per year | |
| All identified cases | 1170 | 97.9 | 232 | 19.4 |
| Reviewed cases | 848 | 71.0 | 219 | 18.3 |
| ILDs of known cause | 260 | 21.8 | 77 | 6.5 |
| CTDs/vasculitis | 145 | 12.1 | 39 | 3.3 |
| Pneumoconioses | 42 | 3.5 | 9 | 0.8 |
| Drug-induced ILDs | 31 | 2.6 | 14 | 1.2 |
| HP | 28 | 2.3 | 11 | 0.9 |
| Radiation-induced pneumonitis | 7 | 0.6 | 1 | 0.1 |
| Others¶ | 7 | 0.6 | 2 | 0.3§ |
| IIPs | 145 | 12.14 | 52 | 4.4 |
| IPF | 98 | 8.2 | 33 | 2.8 |
| NSIP | 20 | 1.7 | 10 | 0.8 |
| Desquamative interstitial pneumonia | 10 | 0.8 | 3 | 0.3 |
| Organising pneumonia | 9 | 0.8 | 1 | 0.1 |
| Unclassified (despite SLB) | 6 | 0.5 | 5 | 0.4 |
| RBILD | 2 | 0.2 | 0 | 0.0 |
| LIP | 0 | 0.0 | 0 | 0.0 |
| Sarcoidosis | 361 | 30.2 | 58 | 4.9 |
| Particular ILDs | 22 | 1.8 | 10 | 0.8 |
| LAM | 9 | 0.8 | 4 | 0.3 |
| CIEP | 5 | 0.4 | 1 | 0.1 |
| PLCH | 4 | 0.3 | 2 | 0.2 |
| PAP | 2 | 0.2 | 1 | 0.1 |
| Others+ | 2 | 0.2 | 2 | 0.1 |
| Undetermined diagnosis | 60 | 5.0 | 22 | 1.8 |
| Differential diagnosis between IPF and NSIP | 34 | 2.9 | 13 | 1.1 |
CTDs: connective tissue diseases; HP: hypersensitivity pneumonitis; IIPs: idiopathic interstitial pneumonias; IPF: idiopathic pulmonary fibrosis; NSIP: nonspecific interstitial pneumonia; SLB: surgical lung biopsy; RBILD: respiratory bronchiolitis with ILD; LIP: lymphoid interstitial pneumonia; LAM: lymphangioleiomyomatosis; CIEP: chronic idiopathic eosinophilic pneumonia; PLCH: pulmonary Langerhans’ cell histiocytosis; PAP: pulmonary alveolar proteinosis. #: 1 194 601 inhabitants; ¶: including chronic inflammatory colitis (n=4), amyloidosis (n=1), immunoglobulin G4 syndrome (n=1) and progeria (n=1); +: including alveolar microlithiasis (n=1) and Erdheim Chester's disease (n=1).