Primary gastrointestinal non-Hodgkin's lymphoma: treatment outcome.

Primary gastrointestinal lymphoma is the most common extranodal presentation of non-Hodgkin's lymphoma. In this retrospective study, all cases of primary gastrointestinal lymphoma registered at Kuwait Cancer Control Center between January 1992 and December 2001 were reviewed. Patients were diagnosed through an endoscopic biopsy or exploratory laparotomy. Staging procedures included computed axial tomography scan, bone marrow biopsy, barium and follow-through study, as well as routine chemistry (including lactate dehydrogenase) and hemography. There were 46 patients (30 men and 16 women); ages ranged from 16 to 82 years (median age, 43.6 years). The most common site of involvement was the stomach (70%), and the most common histology was large B cell. At least 50% of cases underwent primary radical surgery, and the majority of patients received subsequent chemotherapy and/or local radiation therapy. Chemotherapy consisted of the CHOP (cyclophosphamide/doxorubicin/vincristine/prednisone) regimen for large B-cell histology and CVP (cyclophosphamide/vincristine/prednisone) or oral alkylating agents for low-grade histology. Of this cohort, only 12 cases (26%) have had local or distant relapse. Disease-free survival rates for low-grade and high-grade non-Hodgkin's lymphoma were 64% and 81%, respectively. Primary gastrointestinal lymphoma is a potentially curable malignancy.