The lymphatic and immune system consists of lymphatic vessels, lymph nodes, spleen, thymus gland and tonsils that collect excess fluid, transport substances around the body, and serve as the primary defense against pathogens. Hodgkin's disease is a type of lymphoma originating in lymphocytes, characterized by orderly spread between lymph node groups and common symptoms. It is treated with radiation and chemotherapy depending on factors like age and sex, and has a high survival rate if detected early. Sarcoidosis causes swelling in lymph nodes and organs like the lungs and liver, with symptoms varying by affected areas. It has no known cause but may be due to environmental or genetic factors, and treatments include steroids, immunosuppressants,