Lymphoma, commonly known as cancer of the lymph nodes, is an umbrella term used to describe various types of cancer tumors that originate in the lymphatic system. It is one of the most common types of cancer and affects around 70,000 people in the United States every year.

The most common type of lymphoma is Non-Hodgkin's Lymphoma (NHL), which accounts for more than 85 percent of all lymphoma cases. NHL is a broad category of cancers that can affect any part of the lymphatic system, including the lymph nodes, spleen, liver, or even other organs like the lungs or the brain. It is divided into two major types, Hodgkin's and Non-Hodgkin's. The symptoms of NHL vary from patient to patient, but can include swollen lymph nodes, fever, night sweats, and weight loss.

Treatment for lymphoma usually involves some combination of chemotherapy, radiation, and/or surgery, depending on the type and stage of the disease. Chemotherapy is used to destroy cancer cells, while radiation therapy can be used to shrink tumors. Surgery may be used to remove portions of the lymphatic system that are affected by the cancer. Additionally, newer, advanced techniques, such as immunotherapy, are being used as well.

Risk factors for lymphoma include age, family history, lifestyle factors like diet, exposure to certain chemicals and radiation, and certain medical conditions like HIV/AIDS and autoimmune disorders. While the exact cause of lymphoma is not known, the American Cancer Society suggests that people should take precautions to reduce their risk, such as not smoking and eating a healthy diet.

Lymphoma is a very serious disease, but with early detection and advances in treatment, the survival rate is quite good. Research is advancing quickly, and scientists are exploring new treatments and developing more effective methods to tackle this disease. Fortunately, with the support of family, friends, and medical professionals, those affected can still lead happy and healthy lives.