Monarch Disease Ontology entry MONDO_0017346 (Epstein-Barr virus-positive diffuse large B-cell lymphoma of the elderly) is a rare form of diffuse large B-cell lymphoma occurring most commonly in patients over the age of 50 (usually between 70-75 years of age), without overt immunodeficiency, and presenting with nodal and extranodal involvement (in sites such as the stomach, lung, skin and pancreas) and B symptoms (fever, night sweats, weight loss). The tumor is characterized by an aggressive course and a short survival rate. Also known as: EBV Positive diffuse large B-cell lymphoma of the elderly, EBV-Positive diffuse large B-cell lymphoma, NOS, EBV-positive DLBCL of the elderly, Epstein-Barr Virus Positive diffuse large B-cell lymphoma of the elderly, Senile EBV-associated B-cell lymphoproliferative disorder, age-related EBV Positive B-cell lymphoproliferative disorder.