what are blebs in lungs
Blebs are air filled pockets which occur due to weakness of the lung tissues. They usually occur on the lung surface. These may sometimes rupture due to drastic changes in lung pressure which occurs during scuba diving, mountain climbing etc. However, a single small bleb or even several small blebs may be asymptomatic and usually are not serious, so no treatment is indicated. Large blebs may rupture more frequently leading to pnemothorax or a collection of air in the pleural cavity outside the lung. Pnemothorax can cause pressure over the lung leading to lung collapse and difficulty in breathing.