Radiolabeled Monoclonal Antibody in Treating Patients With Previously Treated Large Cell Lymphoma

Inclusion Criteria

* Histologic diagnosis of B-cell diffuse large cell lymphoma (REAL classification system) confirmed by an independent central pathology reviewer.
* The tumor's B-cell phenotype will be confirmed by positive L-26 (CD20).
* Previous treatment with 2 common combination chemotherapy regimens. Patients previously treated with unlabeled monoclonal antibody therapy are eligible.
* Men or women at least 18 years of age.
* Karnofsky Performance Score (KPS) estimated to be \> 60 at the time of the scheduled therapeutic dose of 131I-Lym-1.
* Life expectancy estimated to be at least 3 months from the time of the therapeutic dose of 131I Lym-1.
* Measurable disease demonstrable by physical examination or computerized tomography (CT).
* CT scan evidence of at least one indicator lesion with at least one diameter that measures \> 2 cm. (The CT scan should be done within 2 weeks of the imaging study.)

Exclusion Criteria

* Inability or unwillingness to comply with the following:
* Bone marrow biopsy
* Return for follow-up visits
* Remaining motionless for extended periods of time for imaging procedures
* Serial blood/urine sampling (for dosimetry patients only)
* Pregnancy (Women of childbearing potential must be practicing an effective method of contraception.)
* Presence of a second malignancy except for basal cell skin carcinoma or carcinoma in-situ of the cervix
* Presence of active lymphomatous meningitis or other CNS involvement with lymphoma.
* HIV positive patients.
* Prior total body irradiation, or a course of prior radiation \> 3,000 cGy delivered to \> 20% of the central marrow or the lumbar vertebrae within 6 months of screening.
* Serum creatinine or total bilirubin \> 2 x the upper limit of normal.
* Aspartate aminotransferase (AST), alanine aminotransferase (ALT) or alkaline phosphatase \> 3 x the upper limit of normal.
* Significant marrow lymphoma (defined as lymphoma cells constituting greater than 20% of the hematopoietic marrow elements from an iliac crest biopsy). A prior bone marrow biopsy is acceptable if it meets the following criteria:
* If there is prior bone marrow involvement, the biopsy must be performed within 45 days of screening.
* If there is no prior bone marrow involvement, the biopsy must be performed within 90 days of screening
* WBC count \< 3,500/mm3, granulocyte count \< 1,500/mm3, or platelet count \< 125,000/mm3.
* Positive human anti-mouse antibodies (HAMA) serum values, defined as \> 74 ng/mL at screening.
* Patients who have not recovered from toxicities of most recent anti-lymphoma therapy.
* Treatment with:
* Colony stimulating factor G-CSF or GM-CSF within 120 hours of screening laboratory assessment.
* Erythropoietin (EPO) within a month of screening laboratory assessment
* Whole blood or platelet transfusion within 120 hours of screening laboratory assessment
* History or electrocardiographic (ECG) evidence of Q-wave myocardial infarction within 6 months of screening or congestive heart failure (CHF; NYHA Stage III or IV).
* Known hypersensitivity to iodine or iodine-containing organic substances.
* Patients who require therapy with anticoagulants or antiplatelet drugs which cannot be discontinued during the study.
* Patients who are known to have antiplatelet antibodies.