C86.4: Blastic NK-cell lymphoma

Blastic NK-cell lymphoma, classified under the ICD-10 code C86.4, is a rare and highly aggressive type of non-Hodgkin lymphoma, a cancer that originates in the lymphatic system. The 'NK' in its name refers to natural killer cells, a type of white blood cell, which is primarily affected by this disease. When these cells become cancerous, they grow and multiply in an uncontrolled manner, leading to enlargement of lymph nodes and various other symptoms. People with blastic NK-cell lymphoma may experience fever, night sweats, unexplained weight loss, and fatigue. Additionally, affected individuals often present with skin lesions or rashes, and this disease may involve multiple organ systems. Blastic NK-cell lymphoma is particularly aggressive, often progressing rapidly if not treated. It's worth noting that this disease is not contagious and cannot be transmitted from person to person. The exact cause of blastic NK-cell lymphoma remains unknown.