Kris Jenner's Mom MJ Shannon's Cause of Death Revealed — photo 1 of 3

The cause of death of Mary Jo “MJ” Shannon, mother of Kris Jenner and grandmother of the famous Kardashian-Jenner clan, has been revealed. According to her death certificate, obtained by Us Weekly on Tuesday, the immediate cause was acute cardiopulmonary arrest. Contributing conditions included acute respiratory failure and metastatic lung cancer, which the 91-year-old had been battling for…