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Emphysema is characterized by the destruction of the alveoli, leading to reduced elastic recoil of the lungs and impaired gas exchange. Common symptoms include shortness of breath, a chronic cough, and wheezing, particularly during physical activity. Patients often exhibit a barrel-shaped chest due to air trapping. Additionally, emphysema is primarily caused by long-term exposure to irritants, such as cigarette smoke and environmental pollutants.

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AnswerBot

2mo ago

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