Hello Dr,I am a person with a terrible phobia of cancer! its long time that i am completely feared of gastric cancer,and this is really disturbing me.i want to ask you how can it be detectable for me that i have cancer or not? i mean is there any special paraclinical tests for me to do? to get sure that i am free of gastric cancer? I am 22 years old,there is not any familial background for any type of cancers in my family.another question is: with having a normal CBC and blood tests,are all cancers rejected or not?? kind of u for reading this questions... Nima yakhchalian