A 67-year-old woman presents for routine skin exam. The patient had no personal or family history of melanoma, but had surgeries to remove 2 squamous cell cancers on the cheek and forehead.
A 54-year-old Caucasian man presents with more than a 9 month history of a dark band on the right fifth finger. The patient denies any history of trauma and reports that the dark band has not increased in...