Radiological Differential Diagnosis Of Chest Diseases

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Radiological Differential Diagnosis of Chest Diseases An Incomplete List Devesh Chauhan

Anterior Mediastinal Masses

• Thymoma • Teratoma • Sub-sternal thyroid • Lymhoma

Opacified Hemithorax •

• • •

Atelectasis Pneumonia Pleural effusion Post-pneumonectomy

Pneumomediastinum • Ruptured esophagus. • Ruptured trachea/bronchus. • Iatrogenic. • Asthma. • Pneumoperitoneum.

Acute Alveolar Infiltrate • • • •

Pulmonary edema Pneumonia Aspiration Hemorrhage

Chronic Alveolar Disease – Alveolar cell carcinoma. – Alveolar sarcoid. – Lymphoma. – Alveolar Proteinosis.

Large Cavitary Lung Lesion • Abscess • Carcinoma. • Tuberculosis.

Bibasilar Interstitial Disease • Bronchiectasis. • Aspiration • Desquamative Interstitial Pneumonitis (DIP). • Asbestosis. • Sickle Cell Disease. • Scleroderma.

Upper Lobe Disease • • • •

Post primary Tuberculosis. Silicosis. Eosinophilic Granuloma. Ankylosing Spondylitis.

Micro-nodular Lung Disease • • • •

Metastasis. Sarcoid. Pneumoconiosis. Miliary Tuberculosis.

Chronic Interstitial Disease Pulmonary Fibrosis

• • • • • •

Pneumoconiosis. Interstitial Pneumonia. Granulomatous Disease. Neoplastic disease. Idiopathic fibrosis. Collagen vascular disease

Small Cavitary Lung Lesions • Septic emboli. • Rheumatoid nodules. • Squamous or transitional cell metastasis. • Wegener’s Granulomatosis.

Lymphangitic Spread to the Lungs • • • • • •

Lung Carcinoma. Breast Carcinoma. Stomach Carcinoma. Pancreas carcinoma. Laryngeal Carcinoma. Cervical Carcinoma.

Multiple Lung Nodules • • • • •

Metastasis. Wegener’s granulomatosis. Rheumatoid nodules. Arterio-venous malformations. Septic emboli. emboli

Pulmonary Interstitial Edema • Congestive heart failure. • Lymphangitic spread. • Allergic reaction.

Shifting Infiltrates • Loeffler’s Syndrome. • Allergic broncho-pulmonary Aspergilosis. • Asthma. • Polyarteritis. • Viral Pneumonia.

Unilateral Hyperlucent Lung. • • • •

Swyer-James syndrome. Pulmonary embolism. Pneumothorax. Obstructive Emphysema.

Rapidly Clearing Alveolar Infiltrate • • • •

Hemorrhage. Pulmonary edema. Aspiration. Pneumococcal pneumonia.

Cavitating Pneumonia • • • •

Staphylococcus. Streptococcus. Mycobacterium Tuberculosis. Gram negative (Klebsiella).

Middle Mediastinal Masses • • • •

Lymphadenopathy. Aneurysm. Esophageal Duplication. Bronchogenic cysts.

Masses with Air Bronchogram • Lymphoma. • Alveolar cell carcinoma. • Pseudolymphoma (MALToma – Mucosa associated pseudolymphoma)

Hilar Lymphadenopathy • • • • •

Sarcoidosis. Tuberculosis. Lymphoma. Bronchogenic Carcinoma. Metastasis. Metastasis

Cavities Containing Masses • • • •

Aspergillosis. Cavitating bronchogenic carcinoma. Tuberculosis. Hydatid Cyst.

Infiltrates with Effusion • • • •

Staph Pneumonia. Strep Pneumonia. TB. Pulmonary Infarct.

Mass + ipsilateral Lymphadenopathy • Bronchogenic Carcinoma. • Lymphoma. • TB.

Solitary Pulmonary Nodule • • • • • • • •

Bronchogenic Carcinoma. Hamartoma. Histoplasmoma. TB Granuloma. Bronchial Adenoma. Solitary Metastasis. Round Pneumonia. Rounded atelectasis.

Pleural Effusion • • • • • • • • •

CHF. Metastasis. Pancreatitis. Pulmonary embolism. Trauma. Empyema. Collagen Vascular Disease. Ovarian Tumor (Meig’s Syndrome). Chylothorax.

LT sided Pleural Effusion • • • •

Boerhaave’s Syndrome. Dissecting Aortic aneurysm. Pancreatitis. Distal thoracic duct rupture.

Multiple Small Calcifications • • • • • •

Histoplasmosis. Silicosis. Chicken pox pneumonia. Metastatic calcification. Secondary Amyloidosis. Alveolar Microlithiasis.

Posterior Mediastinal Masses • Neurogenic Tumors. • Lymphadenopathy. • Extra-medullary hematopoesis.

Mediastinal Adenopathy • • • • •

Bronchogenic Carcinoma. Lymphoma. TB Metastasis. Sarcoid.

Lung disease & Rib Destruction • • • •

Bronchogenic CA – Pancoast tumor. Actinomycosis. Blastomycosis. Multiple myeloma.

Pleural Calcification • Old TB empyema. • Asbestos exposure. • Hemothorax.

Masses in Cardio-phrenic Angle • Sequestration. • Diaphragmatic hernia. • Pericardial cyst.

Unilateral Pulmonary Edema • • • •

Aspiration. Disease in other lung e.g. COPD. Postural. Rapid expansion of pneumothorax.

Reverse Pulmonary Edema • Eosinophilic lung disease, e.g. Loeffler’s . • Sarcoidosis. • Pulmonary Contusions.

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