Thank you for your query at DoctorSpring.com
For a tumor cell ( however minute it is ) CT with/ without contrast, in either cases the tumor will be picked up.
For minute tumors, it can in no way suppress immunity, so antibodies will be seen and there will be no false negative test.
Hope this was helpful,
Patient replied :
sorry sir didnt understand first sentence of yours clearly. i had asked if a tumour has supressed the immune system will it be big enough or create sysmtoms as u mentioned picked by ct scan without contrast . second part i understood clearly sir sorry and really hope will not disturb u again
To avoid confusion, I will keep it short.
Yes it will be picked up by CT without contrast. And if it impairs immunity in any way, it has to be big enough.