A RARE CASE OF CONCURRENT PRIMARY GASTRIC AND BONE DIFFUSE LARGE B CELL LYMPHOMA.
Primary bone lymphoma (PBL) is an uncommon clinical entity and a rare non-Hodgkin's lymphoma presentation. PBL accounts for less than 5% of malignant bone tumours. Gastric lymphoma (PGL) is also rare cancer, but it is the most common site for extranodal non-Hodgkin lymphoma. We report a rare case of concurrent occurrence of bone lymphoma and gastric lymphoma. The patient presented with a slow-growing swelling around the knee joint for two years. Positron emission tomography incidentally picked up an FDG avid lesion in the fundus of the stomach. Tissue specimens of both the lesions were obtained and conformed to have diffuse large B cell lymphoma on histology and immunochemistry. He is on follow up with the oncology department and being treated with an R-CHOP regimen (rituximab, cyclophosphamide, hydroxydaunorubicin, oncovin (vincristine), and prednisone.