Chest

Question 1

Unilateral hyperlucent hemithorax

Answer 1

Positional, Mastectomy, Poland, Pneumothorax, compensatory hyperexpansion, Swyer-James (McLeod) syndrome

Question 2

Bilateral hyperlucent lungs WITH lung overexpansion

Answer 2

Emphysema, asthma, tracheobronchial tree stenosis

Question 3

Bilateral hyperlucent lungs WITH normal lung expansion

Answer 3

Congenital heart disease, multiple PEs, pulmonary hypertension

Question 4

Tracheal luminal stenosis

Answer 4

Foreign body, mucus plus (ABPA, asthma), misplaced endotracheal tube

Question 5

Tracheal wall stenosis

Answer 5

Carcinoma, inflam (sarcoidosis, post-TB), tracheobronchomalacia)

Question 6

Extra-luminal tracheal stenosis

Answer 6

Lymph nodes, mediastinal tumor, anomalous left pulmonary artery from the right pulmonary artery (right-sided indent)

Question 7

Hemithoracic increased density WITHOUT mediastinal displacement

Answer 7

Consolidation, pleural effusion, malignant pleural mesothelioma

Question 8

Hemithoracic increased density with mediastinal displacement AWAY from

Answer 8

large pleural effusion, diaphragmatic hernia

Question 9

Hemithoracic increased density with mediastinal displacement TOWARD from

Answer 9

Lung collaspe, postpneumoctomy, pulmonary agenesis, malignant pleural mesothelioma

Question 10

Pulmonary air cysts

Answer 10

Postinfection (S. aureus, PCP), lung laceration, intrapulmonary bronchogenic cyst, diffuse lung disease (LCH, LAM, TSC, NF, endstage fibrotic diffuse interstitial lung disease)