period during which symptoms of disease are reduced
(partial remission) or disappear (complete remission).
With regard to cancer, remission means there is
no sign of it on scans or when the doctor examines
you. Doctors use the word 'remission' instead of
cure when talking about cancer because they cannot
be sure that there are no cancer cells at all in
the body. So the cancer could come back in the future,
although there is no sign of it at the time.
"The tumor-free time period, and is dated from
the first, not the last, therapy session. Patients
with tumors that recur within one month of treatment
ending are considered to have had no remission.
Disappearance of all disease is complete remission;
reduction tumor size by more than 50 percent is
considered partial remission."