Date for op

Hi Fairly new to this but have my date for the op to try to remove some of the tumour from the artery. Found out today Chrondosarcoma does not respond to chemo or radiotherepy. Feel so alone, know one seems to have heard of it in this place. My gp is doom & gloom. Not a good way to go into an op. Can't stop crying, worrying about the family etc. Cannot find any info as the consultant has had to research world wide. So difficult. ChrisC