Recognition of proximal bronchiectasis at bronchoscopy: The igloo sign

Relatively few recent reports have emphasized findings on visual inspection of the airways at bronchoscopy in patients with bronchiectasis. In some circumstances, however, bronchoscopic findings can expedite the recognition of bronchiectasis and lead to confirmatory studies if indicated. In this report, we describe the dilatation of proximal subsegmental airways in a patient who subsequently proved to have allergic bronchopulmonary aspergillosis (ABPA).