IGHE and allergic bronchopulmonary aspergillosis: Allergic bronchopulmonary aspergillosis is characterized by a Th2 cell infiltrate, increased pulmonary and blood eosinophilia, brownish black mucus plugs, total serum IgE levels over 1,000 ng/mL (416 IU/mL), Aspergillus-specific IgE and IgG1 antibodies (3).