Vietnamese man's 200-pound tumor removed January 6, 2012 -- Updated 0504 GMT (1304 HKT) Nguyen Duy Hai is seen with his mother and a 198-pound tumor at FV Hospital Wednesday in Ho Chi Minh City before surgery. Procedure was considered risky with 50 percent success rate Tumor had a large mass of blood vessels around it Dr. McKinnon had previously removed tumors around 200 pounds (CNN) -- A Vietnamese man is recovering Friday, one day after what was being hailed as a successful surgery to remove a 198-pound (90-kilo) tumor from his right leg. The surgery on Nguyen Duy Hai took place at FV Hospital in Ho Chi Minh City under the leadership of Dr. McKay McKinnon, a specialist in plastic and reconstructive surgery from Chicago. The procedure was considered risky with a 50 percent success rate because of the amount of blood vessels around the tumor. Video on Tuoitrenews, an English online publication of Tuoi Tre newspaper, showed Hai, who has a genetic disorder, struggling with his tumor and having to walk with the assistance of his hands until the growing tumor rendered him immobile. The website also showed video of his surgery, which was broadcast live. McKinnon has been credited with removing a 200-pound tumor from a woman in the U.S. state of Michigan in 2000 as well as a 176-pound (80 kilo) tumor from a Romanian woman in 2004.