A biopsy of a spot on U.S. Republican presidential candidate, John McCain’s cheek was negative. Doctors at the Mayo Clinic conducted a biopsy on skin removed from McCain’s right cheek to ensure it was not cancerous.

The Senator turns 72 this August, and has had four malignant melanomas surgically removed since 1993, three of which were limited to the upper layers and non-invasive. The fourth melanoma on his left temple was removed in 2000 and was found to be invasive. Doctors during this procedure checked the lymph nodes to trace if the cancer had spread, and found it to be negative.

The recently removed spot appeared to be about the size of a small coin and was noticed during a routine medical examination on Monday at Scottsdale, Arizona, and doctors ordered a biopsy. Michael Yardley, Chair of Public Affairs at the Mayo Clinic said, "The biopsy that was performed did not show any evidence of skin cancer. No further treatment is necessary."