01/24/2008 at 12:20 PM EST
Film critic Roger Ebert, who has been fighting a lengthy battle with cancer, re-entered the hospital Thursday, he announced on his Web site
"I'll have another surgery, which I hope will solve some problems I've still been living with," writes the Chicago-based reviewer, 65. "I'll be in hospital for awhile (nothing like last time, I trust!)."
He adds: "I plan to return full-time as soon as possible."
In 2002, Ebert was first operated on to remove a malignant tumor on his thyroid gland. Additional operations took place in 2003, on his salivary gland, and in 2006, to remove a cancerous growth
in the same area.
Ebert has been the Chicago Sun-Times
's film critic since 1967, and won the Pulitzer Price for criticism in 1975 – the same year he and rival Chicago Tribune
critic Gene Siskel launched their movie review TV show with their trademark thumbs up or down.
Siskel died in 1999. He was succeeded on the TV show by Richard Roeper, who since Ebert's health setbacks has had guest critics in the seat next to him.