What disease did Marlon Brando die of?

Although Marlon Brando's lawyer refused to disclose the cause of his death, it is reported that he died at UCLA Medical Center at 6: 30pm last Thursday at the age of 80. A hospital spokesman said he died of lung failure. He contracted pneumonia in 2002. Earlier, he was seen in a wheelchair and wearing an oxygen mask. It is reported that he fainted at home and was taken to the hospital. The cause of death was a blood clot in his lungs.

This is the official cause of death ~

Privately, I guess a lot. I can't explain them all.