3 doctors weighed in:

What kind/size of brain tumors are not seen on CT scans? Why can't they be seen? If they are small are they benign?

3 doctors weighed in
Dr. Michael Korona
Radiology - Interventional
1 doctor agrees

In brief: See

Ct-scan-info.Com/head-ct.

In brief: See

Ct-scan-info.Com/head-ct.
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Dr. Gerald Mandell
Nuclear Medicine

In brief: Many kinds

Ct exam of brain involves x-rays and for tumor detetion must have intravenous contrast injection.
Some tumors are not seen, not vascular. Some tuingmors have the same density as the surround brain.Very small tumors are difficult to detect.Size is not always criteria for being benign. Certainly if no size change on subsequent scan a month or so later would suggest benign mr most sensitive for tumor.

In brief: Many kinds

Ct exam of brain involves x-rays and for tumor detetion must have intravenous contrast injection.
Some tumors are not seen, not vascular. Some tuingmors have the same density as the surround brain.Very small tumors are difficult to detect.Size is not always criteria for being benign. Certainly if no size change on subsequent scan a month or so later would suggest benign mr most sensitive for tumor.
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