Myeloid and lymphoid are components of certain organs in the body. Myeloid is an organ that originated in the bone marrow, while lymphoid refers to the lymph or the lymphatic system.
Acute or chronic myeloid leukemia can be used to refer to a disease originating in the bone marrow that affects the myeloid line of blood cell, while acute or chronic lymphoid leukemia is used to refer to disease in the lymphatic system, it affects the lymphoid line of a blood cell.
Acute lymphoid leukemia is common amongst children and adolescents up to 16 years of age, while Acute myeloid is common amongst older adults. They have similar symptoms this includes fever, fatigue, night sweats, frequent infections, and weight loss.