OUTLINE: This is an open label, multicenter study. Patients receive an infusion of technetium Tc 99m LL2 monoclonal antibody (LymphoScan) by IV injection or infused over 20-30 minutes after completion of therapy as part of the response evaluation procedures. Planar images are acquired between 4-8 hours and 18-24 hours following antibody injection, and single photon emission computerized tomography (SPECT) imaging is performed between 4-8 hours following antibody injection. Patients may receive a repeat injection of LymphoScan. Patients are followed for 3 to 6 months.