John McCain has a history of melanoma (skin cancer):

• 93 left shoulder in-situ 
• 00 left arm in-situ
• 08/00 invasive melanoma on his left lower temple
  • Michael L. Hinni, M.D. a head-and-neck surgeon at the Mayo Clinic in Arizona, said the August 2000 lesion was 2.2 mm thick at its thickest part and was 2 cm in diameter. 
  • "A 2-cm margin of normal skin was removed around the 2-cm melanoma, resulting in a 6-cm-by-6-cm roughly circular wound on the left side of the senator's face," Dr. Hinni said. "The underlying parotid salivary gland was also removed to assure a clear deep margin, to protect facial nerves from injury and to remove the sentinel and other lymph nodes that were inside the parotid gland."
  • Dr. Hinni said none of McCain's nodes showed any evidence of metastasis. He said McCain has been closely followed since 2000 and has remained melanoma-free since 2002.
• 02 left nasaql sidewall in-situ
• 7/28/08 removal of a growth from his upper right cheek:
  • "The biopsy that was performed did not show any evidence of skin cancer. No further treatment is necessary."