Pneumothorax, often called a collapsed lung, happens when air leaks into the space between a lung and the chest wall. Some inherited connective tissue disorders, including Marfan syndrome, vascular Ehlers-Danlos syndrome, and Loeys-Dietz syndrome, are associated with a higher chance of this problem. It can occur without an injury and may recur, so sudden chest pain or trouble breathing needs urgent medical assessment.
The connection between pneumothorax and connective tissue disorders matters because some inherited conditions affect the structure and strength of tissues in the lungs. Recognizing this association can help healthcare professionals investigate an unexplained or recurrent collapsed lung, consider whether an underlying genetic condition may be relevant, and plan appropriate follow-up care.
How does a connective tissue disorder relate to pneumothorax?
Connective tissue helps support and hold together structures throughout the body, including the lungs, blood vessels, skin, joints, and other organs. Certain inherited disorders affect the proteins or other components that give these tissues their normal properties. In some of these conditions, changes in lung tissue can be associated with small air-filled spaces or blisters that may rupture.
When air escapes from the lung into the space between the lung and chest wall, it can prevent the affected lung from expanding normally. This is called a pneumothorax. It may happen spontaneously, meaning without a significant chest injury or a medical procedure that explains the air leak.
Not every connective tissue disorder carries the same risk. The association is particularly recognized in certain inherited conditions, and pneumothorax is not an inevitable complication for everyone who has one of these diagnoses.
Which connective tissue disorders are associated with a collapsed lung?
Marfan syndrome
Marfan syndrome is an inherited connective tissue disorder that can affect the heart, blood vessels, eyes, skeleton, and lungs. Lung changes are among its possible manifestations. According to GeneReviews, published through the National Center for Biotechnology Information (NCBI), air-filled spaces called bullae can develop in the lungs, particularly in the upper lobes, and may predispose a person to spontaneous pneumothorax.
A pneumothorax can occur in someone with Marfan syndrome even without an obvious injury. It can also recur after an earlier episode. The presence of a collapsed lung does not, by itself, establish Marfan syndrome; healthcare professionals consider the overall medical history, examination findings, family history, and other relevant features.
Vascular Ehlers-Danlos syndrome
Vascular Ehlers-Danlos syndrome (vEDS) is a rare inherited condition associated with fragility of certain tissues and blood vessels. Lung-related complications can include spontaneous pneumothorax, recurrent pneumothorax, and bleeding into the space around a lung, known as hemothorax. NCBI GeneReviews on vascular Ehlers-Danlos syndrome describes pneumothorax as a possible early presentation, sometimes occurring before other major complications become apparent.
This association is clinically important because vEDS can affect more than the lungs. When the condition is already known or suspected, the treating team should be informed so that the person's connective tissue and blood vessel fragility can be considered when selecting investigations and planning treatment.
Loeys-Dietz syndrome
Loeys-Dietz syndrome is another inherited connective tissue disorder that can affect blood vessels, the skeleton, skin, and other body systems. Pneumothorax is a recognized possible manifestation, although its precise frequency has not been established. GeneReviews on Loeys-Dietz syndrome from NCBI notes that pneumothorax occurs more frequently in this condition than would be expected in the general population.
Not everyone with Loeys-Dietz syndrome develops a lung complication. However, a confirmed history of pneumothorax is relevant to ongoing care, particularly when clinicians are considering the possibility of recurrence or advising on activities that may place additional pressure on the lungs.
What symptoms can occur during a pneumothorax?
A pneumothorax may cause symptoms that begin suddenly. According to the Mayo Clinic's information on pneumothorax symptoms and causes, common symptoms include sudden chest pain and shortness of breath. The experience can differ depending on the extent of the lung collapse and the person's overall health.
Examples of symptoms that may occur include:
- Sudden pain on one side of the chest.
- Shortness of breath or difficulty taking a comfortable breath.
- Chest discomfort that becomes more noticeable with deep breathing.
- Chest tightness or discomfort that accompanies a change in breathing.
These symptoms can have several possible causes. In someone with a known connective tissue disorder, chest pain should not automatically be attributed to pneumothorax because certain conditions, including Marfan syndrome and Loeys-Dietz syndrome, can also affect major blood vessels. A separate, potentially life-threatening vascular problem may produce chest or back pain.
When is pneumothorax an emergency?
Sudden chest pain or new difficulty breathing needs prompt medical assessment, particularly in someone with a connective tissue disorder or a previous pneumothorax. Severe chest pain, rapidly worsening breathlessness, fainting, or collapse warrants emergency care. Call local emergency services rather than waiting for symptoms to settle.
A pneumothorax can sometimes become life-threatening if it places increasing pressure on the lungs and affects circulation. This is one reason a person should not try to confirm or rule out a collapsed lung based on symptoms alone. The possible involvement of major blood vessels in some connective tissue disorders also makes urgent assessment especially important when chest pain is sudden or unusual.
How do doctors diagnose pneumothorax in connective tissue disorders?
Evaluation generally begins with the person's symptoms, medical history, previous episodes, and a physical examination. The healthcare professional may ask whether a connective tissue disorder has already been diagnosed, whether similar lung problems have occurred before, and whether there is a relevant family history. This information can help guide further investigation without assuming that a genetic condition is necessarily responsible.
A chest X-ray is commonly used to identify a pneumothorax. Depending on the circumstances, clinicians may use a computed tomography (CT) scan to obtain more detailed images of the lungs or clarify findings. Ultrasound may also help identify air in the pleural space. The Mayo Clinic's guidance on pneumothorax diagnosis and treatment describes these imaging approaches and explains that the choice depends on the clinical situation.
If an episode occurs without an obvious cause, particularly at a young age or repeatedly, clinicians may consider whether an inherited disorder or another underlying lung condition is relevant. Further assessment may involve a pulmonologist or a clinical genetics service, depending on the individual's history and examination findings. Genetic testing is considered when clinically appropriate; it is not necessary for every person who develops a pneumothorax.
How is pneumothorax treated when a connective tissue disorder is present?
Treatment depends on the extent of the lung collapse, breathing and circulatory stability, the presence of an ongoing air leak, the underlying condition, and whether pneumothorax has happened before. Some small pneumothoraces can be managed with observation and follow-up imaging when a clinician determines that this approach is safe. Other cases need a procedure to remove air from the chest.
Possible treatments include:
- Observation: Selected people with a small, stable pneumothorax may be monitored while the air is gradually absorbed.
- Needle aspiration: A clinician removes excess air using a needle or catheter in appropriate circumstances.
- Chest tube drainage: A tube is placed into the space around the lung to remove air and help the lung expand.
- Procedures to prevent recurrence: Some people need pleurodesis, a procedure that encourages the lung surface and chest wall lining to stick together, or surgery to remove or repair leaking air-filled spaces.
When an inherited connective tissue disorder is known or suspected, treatment planning should take account of the condition and the person's overall health. For example, tissue fragility in vascular Ehlers-Danlos syndrome may affect procedural planning. Specialist involvement can help the care team balance the need to treat the air leak with the particular risks associated with the underlying disorder.
Can pneumothorax happen again?
Yes. A pneumothorax can recur, including after the first episode has resolved. The likelihood of recurrence depends on factors such as the underlying lung changes, the cause of the initial event, and the treatment received. Some people need additional treatment to reduce the chance of another episode, particularly when an air leak persists or a pneumothorax repeatedly occurs.
Follow-up should address both recovery from the immediate lung problem and any underlying connective tissue disorder. Depending on the diagnosis, this may involve pulmonary care, genetic assessment, or continued monitoring by clinicians who manage the person's other organ-related risks. A previous episode should be included in the medical history because it may influence future evaluation and treatment decisions.
What precautions may be needed after recovery?
After a pneumothorax, the treating team should explain when normal activities can be resumed and whether additional restrictions are appropriate. Air travel, scuba diving, strenuous activities, and activities involving pressure changes may require particular consideration. The advice depends on whether the lung has fully recovered, the risk of recurrence, the underlying disorder, and the person's individual circumstances.
People with an inherited connective tissue disorder should follow condition-specific advice from their healthcare team rather than applying general recovery guidance without adjustment. For instance, clinicians may provide additional precautions for people with a history of recurrent pneumothorax. Anyone who develops new chest pain or breathing difficulty after recovery should seek medical assessment promptly.
Overall, pneumothorax is a recognized complication of some inherited connective tissue disorders, particularly Marfan syndrome, vascular Ehlers-Danlos syndrome, and Loeys-Dietz syndrome. Understanding this association helps clinicians investigate unexplained episodes, treat a collapsed lung appropriately, and consider measures to reduce recurrence while continuing care for the underlying condition.