Author Question: Which of the following is characteristic of COPD? A. Asymmetric chest expansion B. Increased ... (Read 11 times)

tiara099 · **on:** Jun 25, 2018

Which of the following is characteristic of COPD?

A. Asymmetric chest expansion
B. Increased lateral diameter
C. Increased anterior-posterior diameter
D. Pectus excavatum

Question 2

Which of the following imaging studies should be considered if a pulmonary malignancy is suspected?

A. Computed tomography (CT) scan
B. Chest xray with PA, lateral, and lordotic views
C. Ultrasound
D. Positron emission tomography (PET) scan

reversalruiz · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

ANS: C
In COPD, patients commonly develop a barrel-shaped chest due to emphysematous changes in the lungs. A barrel shape is due to an increased anterior-posterior (AP) diameter. In emphysema, there is a 1:1 ratio of AP to lateral diameter; AP diameter equals the lateral diameter. Normally the AP diameter is twice the lateral diameter.

Answer to Question 2

ANS: A
For pulmonary malignancy, chest films are often nondiagnostic, although they may reveal a nodule, mass, or other abnormality. A CT scan of the chest is typically diagnostic.