We did a retrospective statistical study of 117 patients with non-Hodgkin's lymphoma admitted to our hospital from January 1979 to December 1988. Five-year survival was 83% for patients in stage I at diagnosis, which was significantly better than the 55% in stage II, 37% in stage III, and 34% in stage IV. Five-year survival was 74% for patients with B-cell lymphoma (74%), which was significantly better than with the 32% for T-cell lymphoma. For patients in stage I or II, five-year survival was 46% for those with nasal lymphoma, which was significantly worse than the 72% with nodal lymphoma and the 82% for those with Waldeyer's lymphoma. Sixty-eight patients were treated initially with radiation only. The relapse frequency was 20% in stage I and 40% in stage II. All of the relapses occurred outside the irradiated area treated on the other side of the diaphragm. Of all 48 patients with combination chemotherapy such as vincristine, cyclophosphamide, predonisolone, and Adriamycin (VEPA), mitoxantrone, cyclophosphamide, vincristine, and predonisolone (MCOP), and mitoxantrone, ifosfamide, vindesine, and predonisolone (MIFP), 33 (69%) achieved complete remission.