CTCAE Grade 2 Pulmonary Vein Intra-Operative Injury

Asymptomatic, therapy indicated

Patchy or bi-basilar changes with estimated radiographic proportion of total lung volume that is fibrotic of 25 - <50%

Partial resection of injured organ/structure indicated

Intense or widespread

2+ to 3+ or >1.0 - 3.5 g/24 hrs