Hi, I have recently had an mri and an appointment with a doctor about a 7cm lump in the back of my lower head/neck. 

I had it checked July last year and got told it was not malignant as they couldn't see any blood flow to it. However this recent appointment they have stated there is a high chance it could be a sarcoma.

I haven't slept well, I haven't eaten or exercised. I used to train in the gym 5 days a week, had an athletic level of fitness and never struggled with weight loss due to bodybuilding and easily putting on weight.

If I need a surgery to get this tumour removed, what are the chances of me surviving this op? All I see is negativity everywhere and I want some success stories to ease my anxiety and give me some hope that it'll all be fine. 

thanks