Also Read: Chadwick Boseman's Death Stuns Hollywood: 'This Broke Me'Boseman passed away on Friday of colon cancer. According to a family statement, he was diagnosed with Stage III colon cancer in 2016 and battled the disease over the last four years as it advanced to Stage IV.“A true fighter, Chadwick persevered through it all, and brought you many of the films you have come to love so much,” the statement read.