Question 1:
A 72-year-old female presented with a 4.0 cm linear cluster of flesh-colored papules on the left upper back (Figure 1). The lesions have been present since childhood and remained largely asymptomatic with slight increase in size and number over time. A biopsy was performed (Figures 2A-E).
Click the image below to view the virtual slide.
Figure 1.
Figure 2A.
Figure 2B.
Figure 2C.
Figure 2D.
Figure 2E.
Which of the following is the most likely diagnosis?