UPDATE 1 — Pope Leo to make Sunday appearance after 'steady improvement', Vatican says

(Adds first photos of pope released paragraph 4, quote on eventual hospital discharge paragraph 5, preparations for South America trip continuing paragraph 6) VATICAN CITY, Oct 16 (Reuters) — Pope Leo is showing steady improvement in hospital after undergoing surgery for lung cancer this week, the Vatican said on Friday, adding that he is now able to do normal daily activities with full autonomy. The pope will make his first public appearance since his hospitalisation on Sunday to deliver the traditional Angelus prayer, while preparations continue for his planned November trip to South America, the Vatican said. Leo was diagnosed with lung adenocarcinoma, the most common form of lung cancer, and doctors removed the lower lobe of his right lung in an operation on Tuesday. The Vatican released on Friday the first images of the pope since his surgery, showing him celebrating Mass and standing unaided. "At the moment, we have not received any communication from the doctors regarding his discharge, other than what we were told from the beginning about a one-week timeframe," a Vatican spokesman said. Leo, 71, is due to visit Uruguay, Argentina and Peru from November 6 to 17. Peruvian Pre