1. Orphan Lung Diseases: From definition to organisation of Care.- 2. The Challenge of clinical research in orphan lung diseases.- 3. Chronic bronchiolitis in adults.- 4. Diffuse bronchiectasis of genetic origin.- 5. Allergic bronchopulmonary mycosis.- 6. Orphan Tracheopathies.- 7. Amyloidosis and the respiratory tract.- 8. Churg-Strauss syndrome: A clinical and therapeutic approach.- 9. Granunomatosis with polyangiitis (Wegener's granylomatosis).- 10. Alveolar Hemorrhage.- 11. Pulmonary Involvement in Takayasu Arteritis and Behçet Disease.- 12. Pulmonary vascular manifestations of hereditary hemorrhagic.- 13. Hepatopulmonary syndrome.- 14. Non-Langerhans cell histiocytosis -including Erdheim-Chester disease- and the lung.- 15. Idiopathic eosinophilic pneumonia.- 16. Multiple cystic lung disease.- 17. Lymphangioleiomyomatosis.- 18. Pulmonary alveolar Proteinosis.- 19. Exogenous lipoid pneumonia.- 20. Pulmonary alveolar microlithiasis.- 21. Pulmonary Fibrosis and the many faces of UIP.- 22. The syndrome of combined pulmonary fibrosis and emphysema.- 23. Non-specific, Unclassifiable, and Rare Idiopathic Interstitial Pneumonia.- 24. Organizing Pneumonias.- 25. Interstitial lung disease in systemic sclerosis.- 26. Interstitial lung disease in connective tissue diseases other than systemic sclerosis.- 27. Interstitial Lung Disease in Undifferentiated Forms of Connective Tissue Disease.- 28. Langerhans cell Granulomatosis and smoking-related interstitial lung diseases.- 29. Rare causes and the spectrum of hypersensitivity penumonitis.- 30. Chronic beryllium disease and other insterstitial lung diseases of occupational origin.- 31. Lymphoproliferative lung disorders.- 32.  Pulmonary manifestations of hematological malignancies.- 33. Pulmonary hypertension in orphan lung diseases.- 34. Orphan and rare drug-induced and iatrogenic respiratory disease.- 35. From cancer mimicking orphan lung disease to orphan thoracic oncology.- 36. Rare Diffuse lung diseases of genetic origin.