Correct!
2. Convex margins
The presence of a mass with a linear or angular shape or concave margins suggests the lesion is benign (1). In contrast, a spiculated or convex margin suggests malignancy.
A careful evaluation of the CT scan reveals that the lesions have a heterogeneous density (Figure 2).
Figure 2. Close up of the right middle lobe lesion (Panel A) and the left lower lobe lesion (Panel B) showing heterogeneous densities.
Which of the following would be most consistent with a heterogeneous density? (Click on the correct answer to move to the next panel)