C81-C96: Malignant neoplasms, stated or presumed to be primary, of lymphoid, haematopoietic and related tissue

Malignant neoplasms of lymphoid, haematopoietic and related tissues refer to a group of cancers that originate from the cells of the immune and blood-producing systems. These systems include the lymph nodes, bone marrow, spleen, and thymus. The culprit behind these conditions is an uncontrolled growth and spread of abnormal cells, which may impede normal functions. Symptoms often vary but may include fatigue, weakness, infections, unexplained weight loss, and swollen lymph nodes. As the disease progresses, it may cause serious complications like anemia and immune system dysfunction. These types of cancers do not have a defined transmission route as they are not infectious diseases but largely result from genetic changes, environmental factors, and sometimes, unknown causes. It's important to note that these cancers are diverse and each type has its own unique characteristics and progression rate.