BERLIN - Director Oliver Stone said Tuesday he is worried about the health of actor Michael Douglas, who is battling throat cancer.

Douglas, who reprised his role as stock trader Gordon Gekko in Stone's latest film "Wall Street: Money Never Sleeps," is in a "precarious" state of health, Stone told reporters in Berlin.

Douglas was meant was meant to accompany him on a promotion tour in Europe, but Stone said Douglas remained in the U.S. for further cancer treatments.

Douglas, who turned 66 on Sept. 25, said in August he is battling throat cancer, but he attended the film's premiere in New York three weeks ago.

New York-based publicist Allen Burry said Douglas finished his treatments last week.

"Doctors were very pleased and have scheduled no more treatments," he said.

Burry said Douglas has a six- to eight-week period of recuperation, "which all cancer patients go through."

Stone's newest film is a sequel to the 1987 "Wall Street," for which Douglas won an Academy Award.