Benefits - what will I be entitled to? I'll be having an operation to remove my cancer. I work full time.

Hi

I have been diagnosed with oesophagus and stomach cancer, I also need stents because my heart  will not stand the operation.

I work full time, but I will be off work for a while once I have my stents fitted and the operation to remove my cancer, please can you tell me what benefits I will be entitled too.

Many thanks 

Paul