A 45-year-old man presents to your office because a mole on his arm has been changing over the past several months. He has no significant medical history but has been a patient of yours for the past 10 years after his mother was diagnosed with skin cancer. As a teenager, he frequently visited tanning salons and reports numerous severe sunburns. He has fair skin, blue eyes, and many freckles. The mole measured 4 mm in diameter during his last visit. Today it measures 8 mm, is brown and black in color, and has an irregular border.
Can you diagnose the condition in Case 1?
B. Reticulated lentigo
C. Seborrheic keratosis
D. Dysplastic nevus
Click to the next page for the answer.