Would swelling of brain tissues from brain tumor be shown on a non contrast CT scan?

Yes. It is possible to see brain swelling from tumor on non contrast CT. FYI there are better modalities to test for this such as MRI.

Related Questions

2 years and 8 months ago CT scan w&wo contrast ruled out a brain tumor now im worry again can a brain tumor grow that fast and cause symptoms im 27?

Brain tumor. It is possible but is very unlikely. Specially if the symptoms you have now are the same you had 2 1/2 years ago. Discuss your symptoms with your doctor. He may be able to determine what is the problem causing your symptoms and relief you level if anxiety. Read more...