Can a CT scan determine whether a kidney tumor is malignant?

A CT scan can provide valuable information about the characteristics of a kidney tumor, such as its size, shape, and density, which can help suggest whether it is malignant or benign. However, while imaging can indicate the likelihood of malignancy, it cannot definitively diagnose cancer. A biopsy is often required for a conclusive diagnosis. Therefore, while CT scans are essential tools in evaluating kidney tumors, they are not definitive for determining malignancy.