The divergent clinical presentations of transfusion-related acute lung injury illustrated by two case reports.

Background: Although the 2-event pathogenesis of transfusion-related (TR) acute lung injury (ALI) has been accepted as an explanatory model, case reports classically describe patients without other risk factors for ALI. Patients who exhibit another risk factor for the onset of ALI may be neglected as having TRALI, which contributes to underreporting.

Case Report: Two cases of TRALI are reported.