Bone marrow test result mm means multiple myeloma and mm is the abbreviation of its name in English. The English name for multiple myeloma is multiple myeloma and the name is abbreviated as MM, hence bone marrow test result mm means multiple myeloma. Multiple myeloma is a plasma cell disease, a malignant disease caused by the overproliferation of clonal plasma cells. Clinical manifestations include low back pain, bone pain, pathological fracture, anemia, renal insufficiency, hypercalcemia, etc. Bone marrow examination, blood M protein identification and other tests can assist in making a definitive diagnosis. Once the diagnosis of multiple myeloma is confirmed, it is necessary to consult a hematology specialist immediately for early treatment to avoid the delay of the disease.