Madonna’s Late Brother Anthony Ciccone’s Cause of Death was Cancer

Madonna‘s oldest brother, Anthony Ciccone, died from several health issues … including cancer.

According to the death certificate, obtained by TMZ, Anthony died from a combination of respiratory failure and throat cancer.

The specific type is oropharyngeal cancer, which is often caused by smoking … and the document says tobacco use contributed to Anthony’s death.

TMZ broke the story … Anthony was getting treatment at a Michigan nursing facility when he died in February at age 66, with Madonna footing the bill. Anthony had his feeding/breathing tubes removed two days before he passed, even though he knew doing so would have dire consequences.

Madonna actually shows up on the death certificate … that was the first name of their mother. The doc also says Anthony has since been cremated.

Remember … Anthony reportedly suffered from alcoholism, which led to homelessness, and his relationship with his famous younger sister was challenging.