Pulmonary cavitation, allergic aspergillosis, asthma and bronchocentric granulomatosis.

Pulmonary cavitation is a rare complication of allergic bronchopulmonary aspergillosis in patients with chronic asthma. Such patients frequently manifest mucoid impaction of a bronchus, "central" saccular bronchiectasis and bronchocentric granulomatosis, a specific microscopic pathologic entity. Early recognition of this syndrome in asthmatic patients and vigorous treatment with steroids may obviate surgery.