Evaluation and medical management of giant bullae - UpToDate
https://www.uptodate.com/contents/evaluation-and-medical-management-of-giant-bullae
webAug 22, 2023 · INTRODUCTION. A bulla is defined as an air space in the lung measuring more than one centimeter in diameter in the distended state. The term giant bulla is used for bullae that occupy at least 30 percent of a hemithorax [ 1-4 ]. A single giant bulla may be present, or a giant bulla may be accompanied by a number of smaller adjacent bullae.
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