advanced gastrointestinal tumor的用法和样例：
- Keywords carmofur;advanced gastrointestinal tumor;late;
- Objective To study the side effects of glivec in treatment of advanced gastrointestinal stromal tumor so as to work out the countermeasures.
- It is suggested that presence of gastrointestinal tumor should be noted in case of secondary RPF.
- It is suggested that presence of gastrointestinal tumor should be noted in the case of secondary RPF.