On Monday, Former President Jimmy Carter underwent liver surgery at Emory University Hospital in Atlanta.

The doctors removed a small mass from the former president’s liver and said the surgery  “proceeded without issues, and the prognosis is excellent for a full recovery” according to a statement from the Carter Center.

The surgery comes after Carter cut short a trip to Guyana in May and returned to Atlanta.  He was scheduled to be an observer to that nation’s national elections and at the time his press agents said that he was “not feeling well.”

The 90-year-old Carter had been conducting press interviews and appearances to promote his book “A Full Life.”