Reading Time: 3 mins  Libby-Ann Harpaul-Sahadeo  What is Multiple Myeloma?  Multiple myeloma (MM) is a blood cancer that may sometimes present as tumors called plasmacytomas, which are clusters of these malignant plasma cells. In this disease, healthy plasma cells turn cancerous and multiply uncontrollably. The cancerous plasma cells also produce excessive amounts of an abnormal... Continue Reading →