"The long-term prognosis is considered excellent but the majority often will require long-term low-dose oral corticosteroid therapy in order to prevent relapse 7-8."
"Later imaging, e.g. 2 months after the onset of symptoms, may also show linear band-like opacities parallel to the pleural surface or lobar atelectasis 4. This vertical band is not interrupted by the pulmonary fissures."
"Most patients are middle aged, and approximately 50% have background asthma. There is a greater female predilection 1."
"There is non-segmental peripheral airspace consolidation (“photographic negative shadow of pulmonary oedema” - see reverse bat wing appearance) involving mainly the upper lobes but may only be seen in less than half of cases."
"alveolar and/or blood eosinophilia (alveolar eosinophilia ≥40% of bronchoalveolar lavage (BAL) differential cell count; blood eosinophilia ≥1000/mm3)"
"History and etymology"