| Definition | Disappearance of the signs and symptoms of cancer or other disease. When this happens, the disease is said to be "in remission." A remission can be temporary or permanent. A disappearance of evidence of a disease, usually as a  result of treatment. The terms "complete" or "partial" are used to modify the  term "remission." Complete remission means all evidence of the disease is gone.  Partial remission means the disease is markedly improved by treatment, but  residual evidence of the disease is present. Long-term benefit usually requires  a complete remission, especially in acute  leukemia                                                                  .
 
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