When you aren’t feeling well, you trust a doctor to correctly diagnose you so that you can start feeling better. But when it comes to cancer, sometimes that doesn’t happen. Doctors can incorrectly diagnose a patient as having cancer or not having cancer. When this occurs, it’s often labeled as a misdiagnosis or failure to diagnose. A cancer misdiagnosis can lead to severe consequences for a patient. In some cases, they may undergo unnecessary treatment and/or fail to get the correct treatment. This can cause further health complications and side effects that can affect critical functions of the body, like the immune system.