Step 1: Allergic bronchopulmonary aspergillosis (ABPA) is a pulmonary hypersensitivity disorder caused by allergy to Aspergillus antigens colonising the airways, typically in atopic asthmatics.
Step 2: Its diagnostic features include a history of asthma, transient or fixed pulmonary infiltrates, peripheral eosinophilia greater than 1000 per microlitre, immediate skin reactivity to Aspergillus, serum precipitins, markedly elevated serum IgE, and central or proximal bronchiectasis. It may occur in lungs with old cavitary lesions.
Step 3: Recurrent pneumonia is not a recognised feature of ABPA, so the option that is NOT seen is recurrent pneumonia.