Emphysema is one of two conditions grouped under the more general term of chronic obstructive pulmonary disease (COPD). The other is chronic bronchitis. Patients with emphysema caused by alpha-1 antitrypsin (AAT) deficiency may receive AAT infusions to help slow the progression of lung lesions. There is no cure for emphysema, but treatments are available to relieve symptoms and prevent further lung damage. People with emphysema and smoke should stop smoking immediately. After quitting, several treatments are available for emphysema.