Correct!
5. Any of the above
Normally one would proceed directly to thoracentesis but the small volume of fluid and the lack of layering suggested it might be complex and difficult. Ultrasound confirmed the complex nature of the fluid and despite several attempts only 1 milliliter of fluid could be obtained. To better define the fluid and exclude other abnormalities, a thoracic CT scan was performed (Figure 4).
Figure 4. Representative images from the thoracic CT scan in lung windows (A-C) and soft tissue windows (D-F).
What should be done next? (Click on the correct answer to be directed to the sixth of seven pages)