4:00 PM PT -- The toxicology report findings have just been released. There were therapeutic levels of Oxycodone in her blood. A second opioid was found -- Buprenorphine -- which is to treat opioid overuse. Opioids can cause constipation, which can lead to bowel obstruction, which was the cause of her death. There were also traces of Quetiapine, an antipsychotic drug.
As for the bowel obstruction, it was in the form of a strangulated small bowel, caused by adhesions that developed after bariatric surgery (gastric bypass) years ago.
The coroner says there was no drug paraphernalia or narcotics found at her home when she was rushed to the hospital. At the hospital, Lisa Marie went into cardiac arrest. Her urine toxicology screen was negative.
The report confirms TMZ's story ... Lisa Marie had a cosmetic procedure a few months before her death, after which she was prescribed opioids, adding she had a history of "overmedicating," and she was known to forget she had taken her meds and would take them again. The report adds Lisa Marie had a history of alcohol and drug abuse.
Lisa Marie Presley died from small bowel obstruction ... this according to the L.A. County Coroner.
According to an L.A. Medical Examiner document obtained by TMZ ... the exact name of the condition is sequelae of small bowel obstruction. Translation -- Lisa Marie died of complications resulting from a small bowel obstruction.
This document is not the full report, and presumably, there will be toxicology results when that report is made public.
Since Lisa's death, there's been a lot of drama in the Presley household. Her mother, Priscilla, was in a war with Lisa's daughter, Riley Keough, over Lisa Marie's trust -- which has now been settled. Sources connected tell TMZ ... Lisa Marie's estate paid an undisclosed sum of money to Priscilla to settle the dispute. Our sources say it's in the millions.
Priscilla's attorney announced the settlement outside the courtroom after the hearing, saying ... "The families are happy. Everybody is happy and excited for the future."