Radiation Therapy Alone for the Treatment of Stage 1 and 2 Mucosa-Associated Lymphoid Tissue (MALT) Lymphoma

Inclusion Criteria

• •Patients with newly diagnosed stage 1 and 2 MALT lymphoma are eligible for this study
• •Patients with Helicobacter (H.) pylori positive gastric MALT lymphoma are recommended to have treatments with antibiotics prior to enrollment to this protocol
• •Patients who failed other treatment modalities (e.g. chemotherapy, antibiotics therapy etc) are also eligible as far as they never had stage 3 or 4 disease during the course of the disease or disease progression to the opposite side of the diaphragm (as the time course of the response to antibiotic therapy can be very variable among patients, sometimes requiring more than one year for complete response, failure to antibiotic therapy can be very variable among patients, sometimes requiring more than one year for complete response, failure to antibiotic treatment will be defined as no response or progression of the disease documented by endoscopy and biopsy)
• •Patients who have had stage 4 diseases due to bilateral parotid gland or ocular/ocular adnexal involvement or due to multiple sites within Waldeyer's ring will still be eligible