Efficacy of Consolidative Involved-site Radiotherapy for Patients With Limited-stage Follicular Lymphoma

Inclusion Criteria:

* Both male and female aged range from 18 years to 65 years.
* Eastern Cooperative Oncology Group(ECOG) performance status of 0 or 1.
* All patients had histologically confirmed Follicular lymphoma, grade 1 or 2.
* Limited-stage FL patients at newly diagnosed or recurrent without RT in initial management.
* Adequate organ function.
* Negative pregnancy test.
* Signed informed consent document on file.

Exclusion Criteria:

* Woman who were pregnant or lactating.
* With severe local infection or general infective disease.
* Primary lymphoma in special organ including cuticula, center never system, gastrointestinal tract, testicle, and lung.
* With other second primary malignancy except cutaneum carcinoma.
* Being or planning to participate in other study.
* Any patient who in the opinion of the investigator should not participate in the study.

Withdrawal Criteria:

* Patient are free to withdrawal completely from the study at any time upon request.
* Patient in the study may be stopped with the patient agreement at any time at the discretion of investigator.
* In-field progression on irradiation ongoing.
* Poor tolerability adverse events in the period of chemotherapy or irradiation after enrolled in the study.