ROCHESTER, Minn.—Igor Vovkovinskiy, the tallest man in the United States, has died in Minnesota. He was 38. His family said the Ukrainian-born Vovkovinskiy died of heart disease on Friday at the Mayo Clinic in Rochester. His mother, Svetlana Vovkovinska, an ICU nurse at Mayo, initially posted about his death on Facebook. Vovkovinskiy came to the Mayo Clinic in 1989 as a child seeking treatment. A tumor pressing against his pituitary gland caused it to secrete abnormal levels of growth hormone. He grew to become the tallest man in the U.S. at 7 feet, 8.33 inches (2 meters, 34.5 centimeters) and ended up staying in Rochester. His older brother, Oleh Ladan of Brooklyn Park, told the Star Tribune of Minneapolis that Vovkovinskiy was a celebrity when he arrived from Ukraine because of his size and the flickering Cold War of the late 1980s. But Ladan said Vovkovinskiy “would have rather lived …