What could a shadow on brain ct mean? i got a ct and the results were "shadow, irregular low density area on the frontal left lobe." (i have to wait a week to get my mri, so i'm wondering if it's likely serious. i don't have any symptoms.?

That is an unusual word to describe a finding in a brain CT. It may be a transcription mistake or even a scan artifact, and you should ask your Doctor that ordered the test for further explanation. There is not much to do immediately, and you should wait until you get the MRI results before worrying too much.

"Shadow" is not a term that a qualified radiologist would use in the interpretation of a CT scan of the brain. The original report needs to be reviewed. The MRI should give you more information.

Agree with colleagues, as this is not a standard reading of a brain CT report. "Shadow" is indeed nonspecific, to say the least. The "low density area" may represent prior vascular or post-traumatic result, but am just trying to read into potentials. Doubt there is any critical problem here, but MRI will likely clarify.