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- again and more therapy is needed. But sometimes chemotherapy is continued indefinitely—maintained
- remission—until a relapse occurs, at which time the drug program will be changed.
- • For programs in which chemotherapy is combined with radiotherapy , specific rules and formulas apply to
- each treatment protocol—prescribed doses, schedules and drug combinations—which are generally followed
- exactly.
- • There are similar standards for adjuvant chemotherapy programs for patients who have a high risk for
- recurrence . The therapy to wipe out small nests of cancer cells that cannot be detected is generally given for
- six months to one year.