Allergic bronchopulmonary aspergillosis (ABPA) is characterized by an exaggerated immune response to Aspergillus species in patients with asthma or cystic fibrosis. Our patient presented with symptoms consistent with asthma and her eosinophil count and serum IgE levels were elevated. The CT findings in conjunction with clinical and laboratory data were indicative of ABPA.

Mucous plugging which is hyperattenuating to skeletal muscle is thought to be pathognomonic of ABPA however this is an inconsistent finding.