Low-dose CT for Diagnosis of Pneumonia in COPD Exacerbations and Comparison of the Inflammatory Profile.

Exclusion Criteria

• •No acceptance of informed consent.
• •The STUDY GROUP: treatment with antibiotic more tan 2 days before consultation.
• •Another entity known pulmonology other than COPD (non-obstructive disorders, bronchiectasis, interstitial lung disease patients, severe pulmonary hypertension, hypoventilation).
• •Chronic treatment with oral corticosteroids or immunosuppressive drug.
• •severe organ comorbidity such as cancer in advanced or terminal phase, pulmonary tuberculosis with important involvement, severe pneumoconiosis.
• •Severe alteration of nutritional status.
• •Heart disease evolved.
• •Limitation for understanding the study (including psychiatric disorder, language problem, social or cultural differences, etc.).