A 57-year-old man presents to his primary care physician with concerns about a dark? lesion on his upper right arm. He reports that he has always
A 57-year-old man presents to his primary care physician with concerns about a dark lesion on his upper right arm. He reports that he has always had many freckles, including this one, but thinks there have been changes in size. He denies pain, fever, rash, and shortness of breath. The biopsy shows atypical cells present in the basal layer … Read more