What Is Minimal Residual Disease (MRD)?
Minimal Residual Disease, often called MRD, refers to a very small number of cancer cells that remain in the body after treatment. These cells are not visible in standard tests. However, they can still cause the disease to return. Therefore, MRD has become an important focus in modern cancer care. In many cases, treatment may appear successful. Reports may show no visible signs of cancer. Even then, a few hidden cells may survive. Over time, these cells can grow again. As a result, doctors now look beyond basic scans and blood reports. They use advanced tools to detect these hidden traces. MRD Is Important in Cancer Care MRD helps doctors understand how well a treatment has worked. It also gives early warning signs of relapse. Because of this, it plays a strong role in planning future treatment steps. For example, if MRD is negative, it means no cancer cells were found using sensitive tests. This usually indicates a better outcome. On the other hand, MRD positive results sugges...