Disco legend Donna Summer has passed away at age 63, from what news reports say was a battle with lung cancer.
TMZ reported that Summer was private about her illness, and that there may have been a connection between debris from 9/11 and her lung cancer:
TMZ has learned ... Donna died from lung cancer. Several sources are telling us Donna believed she contracted it by inhaling toxic particles after the 9/11 attack in New York City.
However, there are very few details about Summer's cancer, or if there were any complications that were involved with her death.
The family of the "She Works Hard for the Money" singer issued a statement, AFP reported, which said: "While we grieve her passing, we are at peace celebrating her extraordinary life and her continued legacy. Words truly can't express how much we appreciate your prayers and love for our family at this sensitive time."
Lung cancer is the No. 1 cause of cancer death for both men and women in the United States, according to the Mayo Clinic. The National Cancer Institute reports that there have been 226,160 new cases of lung cancer so far this year, and 160,340 deaths from the disease.
The cancer occurs when tumors form in lung tissue, most commonly in the cells that line the air passages, according to the National Cancer Institute. There are two main types: small cell lung cancer and non-small cell lung cancer. Small cell lung cancer tends to be more aggressive than non-small cell lung cancer, according to Cedars Sinai.
Risk for the disease is highest among smokers, according to the Mayo Clinic, though lung cancer can also occur in never-smokers, too.