Allergic bronchopulmonary aspergillosis is a serious hypersensitivity disease seen in patients with an underlying pulmonary disorder, most commonly asthma. Diagnosis is based on a combination of clinical, radiologic, and immunologic features. Radiologic findings include perihilar infiltrates, air fluid levels, cavitation, and central bronchiectasis. We describe a case of allergic bronchopulmonary aspergillosis with surgically confirmed mediastinal adenopathy and radiologically evident perihilar adenopathy. We know of no previous case of allergic bronchopulmonary aspergillosis associated with true lymphadenopathy. Allergic bronchopulmonary aspergillosis should be included in the differential diagnosis of hilar adenopathy in predisposed patients. After serologic confirmation of the disease, prompt initiation of treatment results in improved prognosis.