Barrel chest: What causes it?
What causes barrel chest?
- No name / No state given
Mayo Clinic pulmonologist Edward Rosenow, M.D., and colleagues answer select questions from readers.
Answer
The term "barrel chest" describes a rounded, bulging chest that resembles the shape of a barrel. Barrel chest is not a disease. But it may indicate an underlying condition, such as:
- Osteoarthritis in the joints between the ribs and spine. This makes the chest wall rigid. As a result, the rib cage becomes fixed in the inhaled position. This most often occurs in older men. The condition doesn't affect breathing significantly and doesn't require treatment.
- Chronic obstructive pulmonary disease (COPD), such as emphysema. People with COPD often develop a slight barrel chest in the later stages of the disease because their lungs are chronically overinflated with air. As a result, the rib cage stays partially expanded. This makes breathing less efficient and may aggravate shortness of breath already present from the emphysema.


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