Contents Preface v Guest Editors vi Introduction viii List of abbreviations xii 1. An introduction to eosinophils and their biology 1 Steven J. Ackerman 2. Differential diagnosis of pulmonary eosinophilia 19 Laura M. Piggott, Cara M. Gill and Brian D. Kent 3. Biomarkers of eosinophilic inflammation 37 Celeste Porsbjerg and Unnur Björnsdóttir 4. Imaging 51 Alex Bell and Salman Siddiqui 5. Eosinophilic asthma 73 Hitasha Rupani, Jessica Gates, Joanne E. Kavanagh and David J. Jackson 6. Eosinophilic COPD 100 Meropi Karakioulaki and Daiana Stolz 7. Allergic fungal diseases in the upper and lower airways 119 Shigeharu Ueki, Yuma Fukutomi, Yui Miyabe, Takechiyo Yamada, Tsuyoshi Oguma and Koichiro Asano 8. Eosinophilic pneumonias 141 Abhishek Gadre and Praveen Akuthota 9. Hypereosinophilic syndromes and lung involvement 153 Olivier Taton, Benjamin Bondue and Florence Roufosse 10. Eosinophilic granulomatosis with polyangiitis 177 Alexandra M. Nanzer and Michael E. Wechsler 11. Eosinophils and airway nerves in asthma 193 Ubaldo De La Torre, Allison D. Fryer, David B. Jacoby and Matthew G. Drake ERS monograph Eosinophilic Lung Diseases Number 95 January 2022