A pneumonectomy is a surgical procedure that involves the removal of an entire lung. This operation is typically performed to treat serious conditions such as lung cancer, severe lung infections, or other significant lung diseases. The goal is to eliminate the diseased tissue and improve the patient's overall health. After a pneumonectomy, patients may experience changes in their breathing and lung function, as they will have only one lung to perform all respiratory tasks. Recovery can take time, and rehabilitation may be necessary to help patients adjust and regain strength. Regular follow-up care is essential to monitor their health.