All of the following are diagnostic features of allergic bronchopulmonary aspergillosis (ABPA), EXCEPT:
Peripheral eosinophilia
Changing pulmonary infiltrates
Serum precipitins against Aspergillosis fumigants
Occurrence in patients with old cavitatory lesions
Bronchopulmonary aspergillosis results from an allergic pulmonary reaction to inhaled spores of Aspergillus fumigatus. It is characterized by the presence of eosinophilia, chest x ray shows fleeting eosinophilic infiltrates mainly in the upper lobe of the lungs. Bronchopulmonary aspergillosis does not occur in old cavitary lesions. Ref: Harrison's Internal Medicine, 18th Edition, Chapter 254 ; CURRENT Diagnosis and Treatment in Pulmonary Medicine, Chapter 38