Myeloid sarcoma
（重定向自Chloroma）
![](/Images/godic/202501/04/Chloroma_-_very_high_mag2558.jpg")
![Chloroma](/Images/godic/202501/04/Chloroma_CMUJ2558.jpg")
A myeloid sarcoma (chloroma, granulocytic sarcoma, extramedullary myeloid tumor), is a solid tumor composed of immature white blood cells called myeloblasts. A chloroma is an extramedullary manifestation of acute myeloid leukemia; in other words, it is a solid collection of leukemic cells occurring outside of the bone marrow.