Allergic Bronchopulmonary Aspergillosis (ABPA)

A 28-year-old woman with poorly controlled asthma presents with recurrent exacerbations, fever, and expectoration of brownish mucus plugs over the past 6 months. Spirometry shows FEV1/FVC ratio of 62% with FEV1 improving by 18% post-bronchodilator. Total serum IgE is 2400 IU/mL, blood eosinophils are 680 cells/µL, and Aspergillus-specific IgE is elevated. High-resolution CT chest reveals central bronchiectasis with mucoid impaction in proximal airways and high-attenuation mucus. The clinical and radiological findings marked **A** in the diagram are consistent with which diagnosis?