Cryptogenic organizing pneumonia (COP) is a form of idiopathic interstitial pneumonia characterized pathologically by organizing pneumonia (OP) that presents with non-specific flu-like symptoms, as well as cough and dyspnea and where no etiological agent is found. The disease is cryptogenic organizing pneumonia (MONDO_0015264). Also known as: COP, Organizing Pneumonia, bronchiolitis obliterans organising pneumonia, bronchiolitis obliterans organizing pneumonia, cryptogenic organising pneumonitis, cryptogenic organizing pneumonitis, idiopathic bronchiolitis obliterans with organising pneumonia, idiopathic bronchiolitis obliterans with organizing pneumonia.