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.

Possible hazard with use of fiberglass air filters.

The proper use of air filtration is of established importance in the environmental treatment of nasal and pulmonary allergies. Unfortunately the use of fiberglass material in central heating and cooling systems has created a possible insult to tissues already sensitized. The alternate use of washable all metal mesh filters is highly recommended.