| Inclusion Criteria: | 1) Biopsy-proven diagnosis of low-grade Non-Hodgkin's follicular lymphoma of the orbit or MALT of the conjunctiva/orbit. The orbit/conjunctiva has to be the primary or predominant site of involvement or if there is a previous history of systemic involvement, the orbit/conjunctiva should be the only site of new recurrence.
2) No anti-cancer therapy for three weeks (six weeks if Rituximab, nitrosourea or Mitomycin C) prior to study initiatiation, and fully recovered from all toxicities associated with prior surgery, radiation treatments, chemotherapy, or immunotherapy
3) An IRB-approved signed informed consent
4) Age >18 years. This is justified since low-grade non-Hodgkin's lymphoma of the orbit is extremely rare to non-existent in the pediatric population
5) Expected survival of >3 months
6) Pre-study performance status of 0, 1, or 2 according to the WHO
7) Acceptable hematologic status within two weeks prior to patient registration, including: a) Absolute neutrophil count ([segmented neutrophils + bands] x total WBC)> 1500/mm3 b) Total lymphocyte count < 5,000/mm3 for patients with small lymphocytic lymphoma (IWFA) c) Platelet counts> 150,000/mm3, these patients will receive a dose of 0.4 mCi/kg of Zevalin d) Platelet counts from 100,00/mm3 to 149,000/mm3, these patients will recieve a 0.3mCi/kg dose of Zevalin
8) Female patients who are not pregnant or lactating
9) Men and women of reproductive potential who are following accepted birth control methods (as determind by the treating physician, however abstinence is not an acceptable method)
10) Patients previously on Phase II drugs are eligible if no long-term toxicity is expected, and the patient has been off the drug for eight or more weeks with no significant post treatment toxcities observed
11) Patients determined to have less than 25% bone marrow involvement with lymphoma within six weeks of registration (based on a bone marrow biopsy). (This criteria must be strictly met for adequate patient safety.) |