Gastrointestinal lymphoma (a tumor that forms in the lymphatic system), a rare type of cancer, is the most common extra nodal lymphoma and is usually of non-Hodgkin type.
Diffuse large B-cell lymphoma is the most common type of gastrointestinal tract lymphoma. It can occur in any part of the digestive tract but most commonly involves the small intestine, stomach, and ileocecal region.
Lymphoma is a cancer of the lymphatic system. The system includes the widespread organs and tissues that make up the body's immune system (which fights and shields the body against diseases). It also consists of lymph nodes spread throughout the body.
Among the different types of cancer cases, gastrointestinal tract lymphoma accounts for 5-10 % of cases.