LOS ANGELES — Kanye West's mother most likely died of heart disease coupled with complications after plastic surgery, but the exact cause of death can't be known, coroner's officials said Thursday.

Donda West, 58, died Nov. 10 at a Los Angeles-area hospital, a day after she had breast reduction, tummy tuck and liposuction procedures.

A long autopsy report noted that West had coronary artery disease, including blockages of 50 percent to 70 percent in two arteries. The 5-foot-2-inch, 188-pound woman also was overweight and had developed several complications after surgery, including bronchopneumonia in one lung, according to the report.

The investigation found "therapeutic levels of medication" in West's body but no unusually high levels and no internal bleeding.

"It is my opinion Ms. West died from some pre-existing coronary artery disease and multiple postoperative factors following surgery," Dr. Louis A. Pena, a deputy medical examiner, stated in the report.

A representative for Kanye West declined to comment.

Asked whether Donda West would still be alive if she hadn't undergone the elective procedures, Ed Winter, assistant chief of the Los Angeles County coroner's office, said: "She could, possibly. But she could have also died because of pre-existing cardiac issues."

Source: FOXNews.com