Yes, a CT (Computed Tomography) scan can detect tumors. In fact, CT scans are frequently used in the diagnosis, staging, and monitoring of many types of tumors throughout the body. The high-resolution cross-sectional images produced by a CT scan allow radiologists and doctors to discern abnormalities, including tumors, within organs, soft tissues, bones, and other structures. Additionally, when used with contrast agents, CT scans can provide greater detail about blood supply to the tumors, which can be critical for differentiating benign from malignant masses and planning treatment strategies. However, while CT scans can visualize tumors, further tests, such as biopsies, are usually required to definitively diagnose and classify the type and nature of a tumor.