cancer is indeed a right shit, my dad had cancer of the bladder (well he still does, luckily he's in remmission atm) the only way they could reach it to treat it was to insert a tube up the japs eye... he said he's never felt pain like it.
and my gran passed away february this year at the grand old age of 95, they'd found a cancerous growth in her stomach at the end of january, but it was a secondary cancer, they had no idea where the original cancer was and never found out