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Pulmonary Blebs

Pulmonary Blebs are small thin walled air blisters that develop in the lungs. When a bleb ruptures the air escapes into the chest cavity causing a pneumothorax (air between the lung and chest cavity) which can result in a collapsed lung. If blebs become larger, or come together to form a larger cyst, they are called bulla. Patients with blebs will typically have emphysema.