Pope Leo will not require further therapy following lung cancer surgery last week, his doctors have confirmed, after tests indicated his tumour had not spread.

Conclusive histological examinations and molecular biology analyses of the removed tissue verified the diagnosis, showing the disease had remained localised, according to a Vatican statement.

"A subsequent oncological evaluation has confirmed that no further therapy is required," the pope's lead surgeon, Stefano Margaritora, and his personal physician, Luigi Carbone, said.

The announcement comes as it remains unclear if the US-born pope will proceed with a planned trip to Uruguay, Argentina and Peru from 6-17 November.

The 71-year-old pontiff underwent surgery on 13 October to remove the lower lobe of his right lung after being diagnosed with lung adenocarcinoma, the most common form of lung cancer.

The pope returned to St Peter's Square on Wednesday (Reuters)

Leo left hospital on Saturday and is steadily resuming normal duties, returning to St…