XR

Question 1

DDx of Acute Airspace Disease, 4

Answer 1

1) Pulmonary edema
2) PNA
3) Aspiration
4) Hemorrhage

Question 2

DDx of Pneumomediastinum, 5

Answer 2

1) Ruptured esophagus
2) Ruptured Trachea/bronchus
3) Iatrogeninc/trauma
4) Asthma
5) Pneumoperitoneum

Question 3

DDx of Chronic Airspace Disease, 4

Answer 3

1) Alveolar cell CA
2) Alveolar Sarcoid
3) Lymphoma
4) Alveolar Proteinosis

Question 4

DDx of Opacified Hemithorax, 4

Answer 4

1) Atelectasis
2) Pleural effusion
3) Pneumonia
4) Post-pneumonectomy

Question 5

DDx of Large Cavitary Lung lesions, 3

Answer 5

Abscess
Carcinoma
TB

Question 6

DDx of Upper Lobe Disease, 4

Answer 6

SET PARC
Sarcoidosis, Silicosis
Eosinophilic Granuloma
TB
PCP PNA
Ankylosing Spondylitis
Radiation 
Cystic Fibrosis

Question 7

DDx of Bibasilar Interstitial Disease, 6

Answer 7

BAD ASS
Bronchiectasis
Aspiration
DIP
Asbestosis
Sickle Cell Disease
Scleroderma (also rheumatoid)

Question 8

DDx of Micronodular Lung Disease, 4

Answer 8

Metastasis
Sarcoidosis
Pneumoconiosis
Miliary TB

Question 9

DDx of Small Cavitary Lung Lesions, 4

Answer 9

Septic Emboli
Rheumatoid nodules
Squamous or Transitional Cell Metastasis
Wegener’s Granulomatosis

Question 10

DDx of Lymphangitic Spread to the Lungs, 6

Answer 10

Lung CA
Breast CA
Stomach CA
Pancreatic CA
Laryngeal CA
Cervical CA

Question 11

DDx of Multiple Lung Nodules, 5

Answer 11

Metastases
Wegner's
Rheumatoid Nodules
Multiple AVM's
Septic Emboli

Question 12

DDx of Pulmonary interstitial edema, 3

Answer 12

CHF
Lymphangitic Spread
Allergic Rxn

Question 13

DDx of Shifting Infiltrates, 6

Answer 13

Loeffler's syndrome
ABPA, Allergic broncho-pulmonary aspergillosis
Asthma
Aspiration
Polyarteritis Nodosa
Viral PNA

Question 14

DDx of Chronic Interstitial Disease (pulmonary fibrosis)

Answer 14

PigNic
Pneumoconiosis
Interstitial PNA
Granulomatous Disease
Neoplastic Disease
Idiopathic fibrosis
Collagen Vascular Disease

Question 15

DDx of Unilateral Hyper-Luscent Lung

Answer 15

Swyer-James Syndrome
Pulmonary Embolism
Pneumothorax
Obstructive Emphysema

Question 16

DDx of Rapidly Clearing Airspace Disease

Answer 16

Hemorrhage
Pulmonary Edema
Aspiration
Pneumococcal PNA

Question 17

DDx of Masses with Air Bronchogram within, 3

Answer 17

Lymphoma
Alveolar Cell Carcinoma
Pseudolymphoma (Maltoma)

Question 18

DDx of Cavitating PNA, 4

Answer 18

Staphyloccoccal
Streptococcal
TB
Gram Neg PNA, eg. Klebsiella

Question 19

DDx of Middle Mediastinal Mass, 4

Answer 19

Lymphadenopathy
Aneurysms
Esophageal Duplications
Bronchogenic Cysts

Question 20

DDx of Hilar Adenopathy (both BL and Unilateral), 5

Answer 20

Sarcoid, BL
TB, UL
Lymphoma, BL
Bronchogenic CA, UL
Metastasis, UL or BL

Question 21

DDx of Cavities COntaining Masses in Lungs, 4

Answer 21

Aspergilloma
Cavitating Bronchogenic CA
TB
Hydatid Cyst

Question 22

DDx of Airspace Disease w/ Effusion, 4

Answer 22

PNA (Staph and Strept)
TB
Pulmonary infarct

Question 23

DDx of Pulm Mass + Ipsilateral Hilar Adenopathy, 3

Answer 23

Bronchogenic CA
Lymphoma
TB

Question 24

DDx of Solitary Pulm Nodule, 8

Answer 24

Bronchogenic CA
Hamartoma
Histoplasmoma
Tuberculous Granuloma
Bronchial Adenoma
Solitary Mets
Round PNA
Rounded Atelectasis

Question 25

DDx of Left-sided Pleural Effusion, 4

Answer 25

Boerhaave's Syndrome Dissecting Aortic Aneurysm Pancreatitis Distal Thoracic duct Rupture

Question 26

DDx of Pleural Effusion, 9

Answer 26

``` CHF Mets Pancreatitis Pulm Embolism Trauma Empyema Collagen Vasulcar dzs Ovarian Tumor (Meig's syndrome) Chylothorax ```

Question 27

DDx of Multiple Small Calcifications of Lung, 5

Answer 27

``` Histoplasmosis Silicosis Chicken pox PNA Pulmonary Ossification secondary to mitral stenosis Alveolar microlithiasis ```

Question 28

DDx of Posterior Mediastinal Mass, 3

Answer 28

Neurogenic tumors, eg Neurofibroma Lymphadenopathy Extra-medullary hematopoesis

Question 29

DDx of Mediastinal Adenopathy, 5

Answer 29

``` Bronchogenic ca Lymphoma TB Mets Sarcoid ```

Question 30

DDx of Lung Disease + Rib Destruction, 4

Answer 30

Bronchogenic CA, ie. Pancost Tumor Actinomycosis Blastomycosis Multiple myeloma

Question 31

DDx of Pleural calcifications, 3

Answer 31

Old TB empyema Asbestosis exposure Hemothorax

Question 32

DDx of Masses in Cardiophrenic Angle, 3

Answer 32

Sequestration Diaphragmatic hernia (eg, Morgagni Hernia) Pericardial Cyst

Question 33

DDx of Unilateral Pulm Edema, 3

Answer 33

Rapid expansion of PTX Postural pulm edema Diseases of the other lung, eg. COPD

Question 34

DDx of "Reverse" Pulmonary Edema (Peripheral Airspace Disease), 3

Answer 34

Eosinophic Lung disease (eg. Loeffler's Syndrome, Eosinophilic PNA) Sarcoid Pulmonary Contusions