Lymphoma is a type of cancer that begins in the lymphatic system, which is part of the body's immune system. It occurs when lymphocytes, a kind of white blood cell, grow uncontrollably. There are two main types of lymphoma: Hodgkin lymphoma and non-Hodgkin lymphoma. Symptoms can include swollen lymph nodes, fever, weight loss, and night sweats. Treatment for lymphoma often involves chemotherapy, radiation therapy, or targeted therapies. The choice of treatment depends on the type and stage of the disease. Early detection and treatment can improve outcomes, making it important for individuals to be aware of any unusual symptoms and seek medical advice when needed.