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What is an apical bleb?

Author

Michael Henderson

Updated on March 02, 2026

What is an apical bleb?

A pulmonary bleb is a small collection of air between the lung and the outer surface of the lung (visceral pleura) usually found in the upper lobe of the lung. 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.

Keeping this in consideration, why do blebs form on lungs?

Blebs may be present on an individual's lung (or lungs) for a long time before they rupture. Many things can cause a bleb to rupture, such as changes in air pressure or a very sudden deep breath.

Secondly, what is a medical bleb? In medicine, a bleb is a blister (often hemispherical) filled with serous fluid. Blebs can form in a number of tissues by different pathologies, including frostbite. In pathology pulmonary blebs are small subpleural thin-walled air-containing spaces, not larger than 1-2 cm in diameter.

In this regard, where do blebs form on lungs?

Pulmonary blebs tend to appear in the upper lobes of the lung. When they rupture, the air held in the bleb escapes into the chest cavity, leading to a collapsed lung (pneumothorax).

What do lung blebs look like?

Blebs appear as small (<1 or 2 cm) subpleural air spaces, located most frequently at the lung apices. They have thin, almost imperceptible walls.

Are lung blebs serious?

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.

Do lung blebs go away?

The lung can deflate, since the negative pressure created by the diaphragm and chest wall is communicated to the airway, and there is no longer a pressure gradient to expand the lungs. Normally, the lungs heal themselves, and there is no need for intervention.

How do you treat lung blebs?

Patients with recurrent or persistent spontaneous pneumothorax are treated thoracoscopically. Those with blebs or small bullae are generally managed by stapler resection of the lesions.

How common are lung blebs?

Smoking causes inflammation in the small airways leading to tissue damage referred to as emphysematous-like changes (ELCs). In general, PSP is more common in men than women. The annual incidence is 7.4 to 18 per 100,000 men and 1.2 to 6 per 100,000 women.

What does bleb stand for?

Buffered Listeria Enrichment Broth

What is the difference between blebs and bullae?

'Blebs' are blister-like air pockets that form on the surface of the lung. Bulla (or Bullae for pleural) is the term used for air-filled cavities within the lung tissue.

Can you fly with lung blebs?

Travelers with chest surgery, lung collapse, or pleural effusion diagnosis within 1 to 2 weeks of travel, as well as those with active TB, bloody sputum, COPD with an FEV1 of less than 30%, or who require supplemental oxygen over 4L/minute at home, cannot fly.

What is the most common cause of pneumothorax?

A pneumothorax can be caused by:
  • Chest injury. Any blunt or penetrating injury to your chest can cause lung collapse.
  • Lung disease. Damaged lung tissue is more likely to collapse.
  • Ruptured air blisters. Small air blisters (blebs) can develop on the top of the lungs.
  • Mechanical ventilation.

What causes a bleb in the eye?

The bacteria that cause bleb-related endophthalmitis almost certainly arise from the ocular flora, be they transient or permanent. Certain microorganisms such us Streptococcal species can spread through the intact conjunctiva17,14 and then enter the eye through the sclerostomy.

What if pneumothorax goes untreated?

If there's only a small amount of air trapped in the pleural space, as can be the case in a spontaneous pneumothorax, it can often heal on its own if there have been no further complications. More serious cases that involve larger volumes of air can become fatal if left untreated.

Do Bullae go away?

Bullae are typically easy to treat. They will resolve on their own without treatment if not due to an illness or skin condition. However, in some cases complications are possible. If open or drained, bullae have the potential to become infected.

Who is at risk for spontaneous pneumothorax?

In most cases of spontaneous pneumothorax, the cause is unknown. Tall and thin adolescent males are typically at greatest risk, but females can also have this condition. Other risk factors include connective tissue disorders, smoking, and activities such as scuba diving, high altitudes and flying.

Why do tall thin guys get pneumothorax?

Abnormal, small, air-filled sacs in the lung called "blebs" typically rupture and leak air into the pleural space, leading to the spontaneous pneumothorax. This happens in the cases of tall and thin people, who because of the shape of their lungs and chest cavity, are seemingly more prone to these defects.

How do you prevent pneumothorax recurrence?

Strategies for the prevention of recurrent pneumothorax include observation, surgical and nonsurgical pleurodesis, and bleb resection. Other important points to keep in mind include the following: Prompt recognition and treatment of bronchopulmonary infections decreases the risk of progression to a pneumothorax.

Why does COPD cause pneumothorax?

Collapsed Lung (Pneumothorax)

COPD can damage lung tissue. And if air leaks into the space between a lung and your chest wall, that lung can collapse like a deflated balloon.

Is bullous lung disease fatal?

Causes of death generally reflect those seen commonly in severe COPD, including pneumonia, acute-on-chronic respiratory failure, pulmonary embolism, and myocardial infarction. Patients with diffuse emphysema surrounding their bullae appear to have a higher mortality rate than those with normal surrounding lung.

Can stress cause a pneumothorax?

Pneumothorax patients may be included in a high-risk group of severe stress, particularly elderly patients, who can be more fragile and therefore more at risk from a pneumothorax or its related treatment. Pneumothorax is an irritating disease with a high recurrence rate that may require frequent ED visits.

What do you do for a milk bleb?

What are the best remedies for milk blisters?
  1. Saline solution. To remove the blockage, soak the nipples in a solution of salt and warm water.
  2. Nipple massage. Gently massage the nipple to release the blister.
  3. Warm compress.
  4. Olive oil.
  5. Expressed milk.
  6. Frequent breast-feeding.
  7. Hospital-grade breast pump.
  8. Soothing ointment.

Can spontaneous pneumothorax recur?

Primary spontaneous pneumothorax — The estimated recurrence rate after the first primary spontaneous pneumothorax (PSP) is broad, ranging from 0 to 60 percent; however, newer studies suggest average occurrence rates between 10 and 30 percent at one to five year follow-up period, with the highest risk occurring in the

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