(AP) — A Minnesota man who survived being badly burned in a lawnmower explosion was discharged Friday after 264 days in the hospital, but not before his caregivers gathered to say farewell to one of their favorite patients. Chen underwent several skin grafts and 15 surgeries in all, the St. Paul Pioneer Press reported Friday (http://bit.ly/1IVWiL8 ). Stepping from the elevator on his way back from physical therapy Thursday, he got a surprise greeting from more than 50 Regions Hospital employees, some carrying posters, balloons and streamers. Chen's recovery was complicated because so much of his body was burned, said David Ahrenholz, co-director of Regions Burn Center. Chen, who emigrated to the United States from China in 1993, thanked his doctors and nurses.