Extranodal lymphomas include a spectrum of different clinical and pathologic presentations. More than 16% of all lymphomas show extranodal involvement. The gastrointestinal tract (GIT) is the most frequent primary extranodal localization, accounting for an average of 12-13% of all NHL and 30-40% of all extranodal sites. Primary gastric NHL is the most common site accounting for 50-60% of all GIT-NHL, and is therefore considered the most common site of extranodal lymphomas. In contrast to primary gastric NHL, secondary involvement of GI tract by nodal NHL accounts for 20-60% of newly diagnosed cases.In the present work, 36 patients proved to have NHL by histopathological examination were subjected to gastroscopic examination and biopsies were obtained from the gastric body, antrum and lesions if present. Histopathologic examination was done searching for lymphomatous infiltration of the stomach.Patients included in the present study were subjected to careful history taking, physical examination, routine laboratory investigations, chest radiography, abdominal ultrasonography and bone marrow examination when needed.It was found that 21 patients had no GI symptoms while 15 patients had GIT symptoms in the form of epigastric pain, nausea, vomiting and GI bleeding. In addition, it also found that most cases with primary gastric lymphoma had GIT symptoms while a significant percentage of patients with secondary gastric lymphoma were asymptomatic. In the present work the gastrointestinal endoscopic examination showed that:Fifteen out of thirty-sex patients (41.7%) were completely normal while 21 patients(58.3%) showed gastric affection in the form of diffuse gastritis (9 cases), ulcer (10 cases), mass (1 case) and nodule (1 case).On histopathologic examination, it was found that 9 out of 36 cases had gastric lymphoma (25%). They were classified as primary gastric NHL in 6 cases (66.6%) and secondary gastric NHL in 3 cases (33.4%). It was also found that 5 cases of primary gastric lymphoma were positive for H. pylori.