In this photo distributed by MIURA DOLPHINS CO., LTD., 80-year-old Japanese extreme skier Yuichiro Miura, right, who has had four heart operations in recent years, stands atop the summit of Mount Everest as he becomes the oldest person to climb the world's tallest mountain Thursday. (AP Photo/MIURA DOLPHINS CO., LTD.)  MANDATORY CREDIT

Japanese man, 80, oldest to top Everest

An 80-year-old Japanese man who began the year with his fourth heart operation became the oldest conqueror of Mount Everest on Thursday, a f…