As a medical professional with expertise in diagnostic imaging, I can tell you that while CT (computed tomography) scans are a powerful tool for detecting a wide range of tumors, they do not necessarily show up all tumors. The visibility of a tumor on a CT scan can depend on several factors:


1. Size: Small tumors may not be visible if they are below the resolution limit of the CT scan.

2. Location: Some tumors can be obscured by surrounding tissues or bones.

3. Density: Tumors that are similar in density to the surrounding tissue may not be distinguishable on a CT scan.

4. Type: Certain types of tumors, such as those with a cystic or fatty composition, may not be as easily detected as those with a different density.

5. Technique: The specific CT scan protocol used, including the contrast agents and slice thickness, can affect the ability to detect tumors.

It's also important to note that CT scans are not always the first or the best imaging modality for every type of cancer. Other imaging techniques such as MRI (magnetic resonance imaging), PET (positron emission tomography), or ultrasound may be more appropriate depending on the location and type of cancer suspected.

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A computer combines these images into a detailed, cross-sectional view that shows abnormalities in the brain, or tumors. CT scans can be helpful in diagnosing some types of brain tumors, especially those near or involving bone. They can also show swelling, bleeding, and bone and tissue calcification.read more >>