Figure 1

Figure1Questions

What's the most likely cause of this patient's presentation?

A 45-year-old with a history of malignant melanoma presents to their family physician with a pruritic black lesion on their leg. They first noticed it after returning from a family picnic two days earlier. They’re concerned about malignancy and request a biopsy. Examination reveals an irregular glossy black macule above their left ankle.

Which of the following is the most likely cause of this patient’s presentation?