Subacute cor pulmonale in hypersensitivity pneumonitis. A case report.

A 37-year-old non-smoking woman exposed to avian antigens developed progressive respiratory symptoms over several months, culminating in cor pulmonale. Transient nodular shadowing was noted on the chest radiograph, and pulmonary function tests showed a predominantly obstructive pattern. Elimination of antigenic exposure and treatment with diuretics and subsequently corticosteroids resulted in marked but incomplete improvement.