Marie Fredriksson, singer with Swedish pop group Roxette, has threatened to sue a tabloid newspaper for claiming she was suffering from a second brain tumour.
Roxette first hit the UK singles charts in 1989
Fredriksson, 44, who enjoyed chart success in the 1980s and 90s as part of the duo, had surgery - reported to have been a success - to remove one tumour in September 2002.
But Stockholm daily tabloid Expressen reported in January that doctors had found another possible tumour.
Fredriksson's lawyer, Leif Silbersky, wrote to the newspaper saying the report was incorrect and violated the singer's integrity.
Expressen must publish a front-page apology, pay Fredriksson 500,000 kronor ($59,000/£37,000) and her legal fees to avoid a lawsuit, Mr Silbersky wrote.
Fredriksson would donate the money to the Swedish Cancer Society, he added.
The paper's editor, Otto Sjoeberg, said the newspaper did not mean to offend Fredriksson but refused to comment on her demands.
"If she feels that we have written too much or come too close, then we are sincerely sorry about it," he said.
Fredriksson is recovering well "under the circumstances" from her surgery, her manager Marie Dimberg said.
She was diagnosed with the tumour after fainting and hitting her head on a sink at her home in Stockholm.
She suffered concussion in the fall, and the tumour was discovered when she was taken to hospital.
The group called off a 30-date European tour to support the release of a greatest hits album.
With Roxette, she had hits including The Look, It Must Have Been Love and Joyride, and enjoyed further success in the Swedish charts in 1999 after recording a duet with Abba's Anni-Frid Lyngstad.