Thoracic Key

Multiple Well-Defined Nodules Sudhakar Pipavath, MD DIFFERENTIAL DIAGNOSIS Common Metastasis Granulomatous Infection Septic Emboli Wegener Granulomatosis Less Common Pulmonary Langerhans Cell Histiocytosis Varicella Pneumonia Sarcoidosis Lymphoma Rare but Important Rheumatoid…

Peripheral Distribution (Reverse Bat-Wing) Robert B. Carr, MD DIFFERENTIAL DIAGNOSIS Common Contusion Less Common Eosinophilic Lung Disease Cryptogenic Organizing Pneumonia Pulmonary Infarct Acute Respiratory Distress Syndrome Radiation Pneumonitis Rare but…

Acute Dyspnea Christopher M. Walker, MD DIFFERENTIAL DIAGNOSIS Common Pneumonia Pulmonary Edema Pulmonary Embolism Pneumothorax Pleural Effusion Aspiration Asthma/COPD Exacerbation Less Common Lobar Collapse Septic Embolism Pericardial Disease Rare but…

Central Distribution (Bat-Wing) Robert B. Carr, MD DIFFERENTIAL DIAGNOSIS Common Hydrostatic Pulmonary Edema Pneumonia Less Common Lung Injury Pulmonary Hemorrhage Rare but Important Pulmonary Alveolar Proteinosis Acute Interstitial Pneumonia ESSENTIAL…

Cough Christopher M. Walker, MD DIFFERENTIAL DIAGNOSIS Common Pneumonia Chronic Bronchitis Asthma Congestive Heart Failure Malignancy Less Common Pulmonary Embolism Pneumothorax Mycobacterium Infection Cystic Fibrosis Sarcoidosis Bronchiectasis Smoking-Related Interstitial Lung…

Wheezing Jud W. Gurney, MD, FACR DIFFERENTIAL DIAGNOSIS Common Asthma Cardiogenic Pulmonary Edema Pulmonary Emboli Aspiration Less Common Airway Obstruction Extrinsic: Airway Compression Intrinsic: Airway Narrowing Allergic Bronchopulmonary Aspergillosis Tracheobronchomalacia…

Hemoptysis Jud W. Gurney, MD, FACR DIFFERENTIAL DIAGNOSIS Common Bronchogenic Carcinoma Metastases Infection Tuberculosis Aspergilloma Lung Abscess Bronchiectasis Bronchitis Pulmonary Emboli Less Common Diffuse Alveolar Hemorrhage Cardiac Causes Congestive Heart…

Bronchiectasis Jonathan H. Chung, MD DIFFERENTIAL DIAGNOSIS Common Postinfectious Mycobacterium Tuberculosis Mycobacterial Avium Complex Swyer-James (MacLeod) Syndrome Aspiration (Recurrent) Postobstructive Endobronchial Tumor Lymphadenopathy Foreign Body Traction Bronchiectasis Cystic Fibrosis Asthma…

Immune Compromise Jonathan H. Chung, MD DIFFERENTIAL DIAGNOSIS Common Pneumonia Bacterial, Fungal, Viral, Mycobacterial, Protozoal Pulmonary Edema Pulmonary Hemorrhage Drug Toxicity Less Common Pulmonary Emboli Septic Emboli Rare but Important…

Tree in Bud Pattern Eric J. Stern, MD DIFFERENTIAL DIAGNOSIS Common Infectious Bronchiolitis Bacterial Mycobacterial Viral Fungal Bronchiectasis Cystic Fibrosis Allergic Bronchopulmonary Aspergillosis Immotile Cilia Syndrome Aspiration Less Common Follicular…