Vocalist Sigurd “Satyr” Wongraven of Norwegian black metallers SATYRICONhas been diagnosed with a brain tumor.

Satyr revealed the news via his Instagram account, where he wrote: “I got extremely sick eight days ago and was rushed to hospital. Scans have shown that there is a blind passenger in my head. Most likely it is benign. I can live with it as long as it does not grow bigger. Removing it is extremely complicated and should only be done if it grows into a size where it is a matter of life and death.”