An older man presents for evaluation of a 1.5-cm, hyperpigmented lesion on his upper back.
A man is referred for evaluation of a pea-sized lump on his forearm.
A man is referred by his dentist for evaluation of a dark spot on the inside of his lower lip.
A patient presents for evaluation of an asymptomatic lesion below his lower lip that is gradually increasing in size.
A woman presents with itching and burning on her arm that intensifies following sun exposure.