My mum has a tumour and will be having chemo within two weeks. Unfortunately my Dad was with her when she was told this and he's such a self-absorbed hypochondriac he never thought to ask how many cm the tumour is or what stage it is. I'm googling here but it's impossible to learn anything real without knowing how big her tumour is.
If stage one cells still look normal to the naked eye then would I be right in guessing that a tumour must be grade four?