THE death of wasted, disease-ravaged Playboy king Hugh Hefner is mired in a mysterious autopsy cover-up. While the legendary lothario reportedly died at age 91 of natural causes on Sept. 27, sources tell GLOBE he was secretly battling a myriad of devastating health issues — including killer lung cancer rampaging through his body. GLOBE also found shocking details in his death certificate revealing the shriveled skirt-chaser suffered from severe respiratory problems, a strain of E. coli and the blood infection septicemia! The publishing mogul's death is shrowded in mystery. Find out in this week's issue of GLOBE Magazine about Hugh Hefner's autopsy cover-up.