Kris Jenner's mother, Mary Jo Campbell—affectionately known as MJ—died of acute cardiopulmonary arrest, according to her death certificate.
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The certificate, obtained by Us Weekly, also listed acute respiratory failure and metastatic lung cancer as contributing factors to her death.
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MJ passed away at the age of 91. The family has since held a celebration of life on what would have been her 92nd birthday.
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