An 85-year-old male presents to clinic for a “skin cancer screening.” His dermatologic history is significant for multiple nonmelanoma skin cancers and actinic keratoses that were treated with his previous dermatologist. He relocated to your area a few years ago to be closer to his children. He has not seen a dermatologist or a primary care physician since his move. On exam, you note the pictured findings. Which of the following should you discuss with the patient?