Santos, 61, said on Monday that doctors had discovered a tumor on his prostate. The cancer announcement came two weeks before his government was to start peace talks that could put an end to almost 50 years of war with Marxist rebels.

"As you can see, I'm going back home, one of the most pleasant feelings one can have after this experience," Santos told reporters as he left the hospital in northern Bogota.

He also thanked the medical team that treated him.

"I was able to save my life because it was confirmed yesterday that the tumor had not metastasized (spread to other body parts).

They tested all the glands and there was no trace of cancer. In other words, I'm totally cured," he said as he walked out of the hospital.

Santos will not require chemotherapy, his doctors have said, and a complete recovery will likely take up to three weeks. During that time, his ability to travel will be limited.