Do masses show on

A mass will not show on x-rays. Masses like tumors, especially early ones, may not show up on X-rays. Even if a mass does show up, it can be difficult to distinguish from other structures in the body, such as lymph nodes or blood vessels. For these reasons, X-rays are not typically used to diagnose masses. Instead, other imaging tests, such as computed tomography (CT) scans or magnetic resonance imaging (MRI) scans, are used.